#cabletrams — Public Fediverse posts

When the brakes don’t work: the thread about runaway trams

On this day in 1918 (June 23rd when written) there was an “Extraordinary Tramway Incident” in Edinburgh as a result of which, miraculously, nobody was hurt. This was the days of cable traction, when the city’s public transport wound its way slowly and noisily around the streets hauled by an endless loop of moving cable beneath the setts.

Edinburgh Cable Car on route 2, Gorgie Road. Unknown photographer, 1920, © Edinburgh City Libraries

It was just after 10 O’clock in the morning and an empty car (they were always called cars, never trams) was standing awaiting its next service at the Braids terminus, near where Comiston Road meets Braid Hills Road. The driver and conductor were on their break in the adjacent shelter (a replacement version of which is still there to this day). But the vehicle’s mechanical brakes had not been fully set and, imperceptibly slowly at first, the car began to creep away down Comiston Road towards the City.

The tramway shelter on Comiston Road, with a cable car waiting at the former line terminus.

The driver and conductor gave chase as soon as they noticed but were already too late and were unable to catch it as it began to speed up. The cable which moved the tramcars when in service was attached to by means of a mechanical “gripper” and whizzed anything attached to it along at a rather sedate 9½ mph (to which it was limited by Board of Trade regulations). The downhill runaway quickly passed this limiting speed and quickly caught up with the car running in service ahead of it. Fortunately there were no passengers aboard. The conductress saw the approaching danger, called a warning to the driver, and sensibly jumped for it. The inevitable collision happened and the two cars became entangled together. Luckily neither derailed. Less fortunately the driver – who had heroically stayed at his post – found that the gripper which connected his car to the traction cable had become jammed; the conjoined wreckage was thus firmly attached to the cable and was being hauled inextricably towards busy Morningside at a slightly less than terrifying nine and a half miles per hour. The danger was still real however as this was where Comiston Road changed from rural to dense urban in nature and the driver now had no way to stop at any approaching junctions, for any other tram cars ahead of him or to slow for any obstructions such as pedestrians, cyclists, horses, children crossing or workmen carrying sheets of plate glass across his path like they did in the movies then.

1918 Post Office map of Edinburgh, rotated to align Comiston Road on the long axis (it actually points north:south). The Braids terminus is on the left where the line representing the tramway peters out, Belhaven Terrace on the right at Morningside Station. Reproduced with the permission of the National Library of Scotland

At Belhaven Terrace, just one mile from where the runaway had started, there was a set of points manned by a pointsman for switching the cars which had terminated at Morningside Station between tracks. The driver managed to call out his predicament to the pointsman as he sailed helplessly past. The pointsman’s hut had a telephone connection to the winding house at Tollcross which was powering the cable and after a brief call the winding engine was stopped. This brought the runaway – and half of the tramway network in the south and west of the city which shared that cable – safely to a halt. It took time to untangle the damaged cars and extricate the gripper from the cable but within an hour and a quarter from the start of the incident the network was back up and running again as if nothing had ever happened. Sadly no further details were reported in the papers

West Tollcross – showing Central Halls on the right and to its left the Tramway Power Station. J. R. Hamilton, 1914. This is a photograph by a member of the Edinburgh Photographic Society © Edinburgh City Libraries

Runaways tramcars were fortunately very rare, but not unheard of. In April 1890 a horse-drawn vehicle had ran away down Montrose Terrace in the east of the city. One of the animals fell but its panicked companion dragged it and the tramcar along the ground a further 1,000ft before coming to rest outside the Abbey Church. “The passengers, who were greatly alarmed, were not, however, injured”. The same cannot be said about the poor fallen horse, as “on examination it was found… [to] not likely be of any more use.” Sadly it was probably a one way ticket to Cox’s Glueworks in Gorgie for that victim.

Horse tramcars on Princes Street, late 19th century. The lighter coloured car is heading for Morningside © Edinburgh City Libraries

On September 30th 1909 a cable tramcar was involved in a potentially much more deadly accident at Waterloo Place. The car approached the terminus from the direction of Abbeyhill to pick up passengers from a large crowd intending to travel to Musselburgh for the races, but failed to stop in the right place. The driver brought it to a halt further on at the top of Leith Street – outside the General Post Office – and got out to inspect why it had failed to stop in the correct place. The curious and frustrated crowd naturally gravitated towards the vehicle to see what the problem was and if they could board it.

The Waterloo Place tramway terminus for cars to Portobello and onwards to Musselburgh, decorated in 1903 for the coronation visit of King Edward VII and Queen Alexandra © Edinburgh City Libraries

Perhaps the driver prodded around underneath too hard, or perhaps an onlooker knocked something they ought not to have, but in an instant the car suddenly lurched back in the direction of Waterloo Place – and the thronging crowd – seemingly attached to the return cable by forces unknown. The vehicle ploughed through the crowd resulting in six people (including three police men) being injured. Again it was lucky that cable haulage did not work at faster speeds. But all was not yet over; “just at that moment a motor car.. appeared on the scene“. The motor became entangled in the front of the tramcar and was dragged along the road by it for thirty yards. The driver jumped clear, narrowly avoiding behind run over by another tramcar coming up Waterloo Place from Regent Road. And then, as soon as it started, the excitement was over: the tramcar released its unexpected grip on the traction cable and the tangle of public and private transportation ground to a halt.

Laurel and Hardy come off worst from an interaction between motorcars and tramcars

Of the four hospitalised, three had been in the car; the driver Archibald Carmichael and his passengers John McArthy and James Paton, through for the day from Gourock and Port Glasgow for the races. The fourth was a pedestrian, Mrs Mathieson of Gayfield Square. This wasn’t the result of black magic or enchantment however as a simple explanation was soon found. As the tramcar had approached Regent Road it had to switch between traction cables by releasing one cable with the rear gripper and grabbing the other with the front gripper (each tramcar had a front and rear gripper to attach itself to the cables.) At it had moved across the junction where Montrose Terrace branched off London Road the gripper had damaged the cable running in the slot between the rails. This had cut into some of the wire strands which had came started to unravel, preventing the gripper from releasing properly when the driver tried to stop on reached Waterloo Place. The fraying cable meantime had run around the pulley and come back towards the now stationary tramcar from the opposite direction and when the tangle of loose strands passed through the released gripper they quickly became tangled in it and enough unravelling wire built up to suddenly start the car in motion again in the return direction.

1907 Post Office map of Edinburgh. Waterloo Place is on the left above Waverley Station. The tramcar had approached from the east (right) and had damaged the cable when it diverted off London Road at Cadzow Place up Montrose Terrace towards Regent Road (the junction is at the right of the map, near where Abbehill Station is marked). Reproduced with the permission of the National Library of Scotland

It would prove to be a bad day for the Edinburgh & District Tramways Co. and there had already been an accident earlier that morning when at 11:40AM a car overshot a set of points and collided with the pawl near the Abbey Church between Abbeyhill and Meadowbank. This was an emergency stop device mounted in the traction cable slot beneath the road surface which, if it was hit by a tramcar gripper, detached it from the traction cable and brought the tram to a very instant stop. The pawl was a violent but important measure which prevent the gripper from entering and becoming entangled in the large underground pulleys around which the cable ran. The shock of hitting the pawl in this case was severe enough to snap the car’s front axle. But these were different and more efficient times; the tramway depot at Shrubhill simply sent out a gang with a complete new bogey, which they swapped out at the side of the road in Abbeyhill before getting the car quickly back in service.

Cable tramcar No. 150 passing the Abbey Church in Abbeyhill, c. 1900. It is heading east down London Road towards Meadowbank. SC1592743 via Trove.Scot

The return to service lasted just 15 minutes following the accident before the network had to be stopped again! A tramcar going from the Bridges to Leith Street had collided with another motor car and once again the pair became entangled and took some time to clear. This was the third and final accident of the day.

An altogether more tragic runaway accident took place on Saturday 17th October 1925 when an electric tramcar proceeding down a single line section on Ardmillan Terrace ran away and jumped the points at the foot of the hill, crashing into St. Martin’s Episcopal Church. Young Edward Stirling, aged just 8, had been out to buy a toy train for his brother who was in hospital. He was killed instantly when struck by the tram and was buried in Saughton Cemetery on Wednesday 21st. The tram driver, 3 passengers and another pedestrian were hospitalised. The Corporation sent a wreath and his funeral was attended by Councillor Mancor, Convenor of the Tramway Committee and R. S. Pilcher, the general manager of Corporation Tramways. The Lord and Lady Provost sent a letter of sympathy. A subsequent Board of Trade enquiry found no fault with the tramway equipment or tramcar and did not apportion blame to the driver, who had tried to use the resistance brake to slow the tram followed by the hand brake. There was some popular discontent with the Tramways, a correspondent by the pen name of A. Mother wrote to the ‘News to complain about the speed of the electric trams – “too fast for either safety or comfort“- and to protest about plans to increase their speed even further.

The next runaway took place in spectacular fashion on Saturday June 1st 1929. Miraculously, nobody was injured when car No. 349, waiting at the Liberton terminus with no crew but four elderly passengers aboard ran off down Liberton Brae. Anyone who has ever tried to cycle up (and down) that road can attest just how severe the gradient quickly gets! As the crew availed themselves of the facilities in the terminus shelter they didn’t notice their vehicle slowly begin to roll off down the hill; they had not applied the mechanical hand brake and the pressure had leaked out of the air brake hose causing it to slowly release.

Former tramway terminus shelter at Liberton Gardens, on Liberton Brae.

The four passengers (aged 59, 71, 71 and 84) were subjected to a terrifying half mile ride down the Brae before No. 349 came to the corner at Alnwickhill Road, jumped the tracks, slid across the road and pavement and impaled itself on a pole for the overhead wires before caming to rest in the garden of 42 Liberton Brae.

No.349 in the garden of 42 Liberton Brae after the accident of June 1st 1929. © Edinburgh City Libraries

Quite how only one passenger suffered only light bruising and all four had walked away from this defies logic. Indeed the two 71 year olds who had been aboard, a married couple from Leith Walk, simply waited for the next car and carried on home as if nothing else had happened. The house at number 42 was similarly unscathed, although the same could not be said for its garden wall, gate and neat privet hedging.

A News photo of No.349 in the garden of 42 Liberton Brae after the accident of June 1st 1929

As a result of this incident protective barriers were installed on the corner outside numbers 42 to 46 where they remain to this day; the dents in their metalwork show they still serve their intended purpose well.

Crash barriers, No. 42-48 Liberton Brae

Six years later, in 1935, an accident took place only a few hundred metres down the Brae at Braefoot Terrace. The current collection pole of a tramcar proceeding uphill became dislodged from the current wire and the vehicle lost power and ground quickly to a halt. The trailing SMT bus was following too closely to stop in time and swerved off the road to avoid a collision. Instead it demolished the shopfronts of a James Baxter’s butchers, Adam Smith’s chemist and the branch of the Commercial Bank of Scotland. There were fortunately no major injuries; the butcher’s boy had a lucky escape as he had just been sent outside to clean the windows only to find a thirty-two seater bus baring down on him. He was able to jump clear in the nick of time.

On 25th October 1945, 64 year old Brownlow Grigor of Leith, a Corporation tram driver with 30 years experience was fined £3 by the Burgh Court for “having driven a tram culpably and recklessly“. Grigor was in charge of car No. 42 and had not been paying sufficient attention as he was trying to stow away his thermos flask. He had approached the sharp bend where cars travelling between Morningside and Marchmont turned off Church Hill and onto Greenside Gardens too fast and the laws of physics did the rest. His vehicle jumped the tracks and demolished a 24-foot section of the wall of – coincidentally – number 42 Greenhill Gardens. The embarrassment was all the more severe as this house was St. Bennets, the official residence and private chapel of the Roman Catholic Archbishop of Edinburgh and St. Andrews! Grigor’s claim that it was defective rails that were at fault was not upheld.

1945 Ordnance Survey town plan of Edinburgh showing the traamway winding its way from Church Hill to Strathearn Place via Greenhill Gardens. Number 42, marked “RC Chapel (Private)” is St. Bennet’s, official residence of the Archbishop. Grigor’s car had jumped the rails as it made the sharp turn in front of it at too high a speed. Reproduced with the permission of the National Library of Scotland

Our last calamity took place in 1951 and it was the heroic figure of James Ferguson, a 53 year old worker from Portobello Power Station, who averted a real catastrophe. The busy tramcar he was on was hit by a lorry near Piershill which injured the driver and caused him to lose consciousness. Ferguson leapt to his feet, ran the length of the car, punched through the glass door to the driver’s compartment with his bare fist and let himself into the cab to disengage the power lever and apply the brakes. Ferguson was treated in hospital for cuts to his hands but was otherwise unscathed.

https://www.flickr.com/photos/127340508@N05/26917130321/

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The thread about the excavation of parts of Edinburgh’s old cable tramway system from beneath Leith Walk, what the various pieces of ironmongery were and how it all worked

This thread was originally written and published in bits and pieces between 2000 and 2022 as bits of tramway came out of the ground. It has substantially re-written here to create a coherent story.

In a previous post I covered how (and why) Edinburgh came to use cable-hauled trams in the 1880s and why Leith didn’t, and also some basics of how that system worked.

The principal of operation of a cable hauled tramway is quite simple. Between the tram tracks is a slot, in which there runs an endless loop of moving cable. The cable is powered by steam engines in a winding house, from where it runs around the system under the streets on an ingenious (and complex) series of pulley wheels. The tram car is fitted with a pair of grippers which slide into the slot; to move forward it grabs the cable with a gripper and to stop it releases the cable and applies its brakes. To move across junctions, between different cables or to pass subterranean obstructions such as pulley wheels, it can perform an elaborate ceremony whereby it grabs and releases different cables with the front or rear grippers – often with a little bit of gravity assistance.

1882 American diagram of a hypothetical cable tramway system. The winding house with its steam engines, gearing and cable drums is towards the top. The cables exit the winding house in a tunnel under the street and then head off around the system in the slot between the tracks, guided by a large system of pulleys.

One of the most common finds has been sections of old tramway rail. A tramway rail differs from a railway rail in that the rail has a flat top with a groove in the middle of it for the flange of the wheel to run in; a railway rail has a domed top and the wheel flange hangs over the side. The rails were relaid when the move was made from cable traction (or in Leith’s case, horse) to electric, so none of the dug up rail sections will be from cable days.

Tram rails on Leith Walk, notice the dark line on the top which is the groove for the wheel flange to run in. © self

The next most common item that was seen during excavations were the U-shaped cast iron “chairs” that formed the supporting base of the conduit structure in which the cable ran beneath the street surface. To better understand what were are looking at (and for, underground), a cross-section of a cable tramway is helpful, I can’t find one for Edinburgh so one from San Francisco will do as the two were fairly similar. The chairs are coloured yellow, and sat on the concrete base of the conduit.

San Francisco Cable tramway cross-section. The rails are coloured green; the horizontal ties in blue; the top of the conduit structure in orange; the supporting chairs in yellow; the small cable support pulleys in pink; and the cable gripper in red.

The Edinburgh system did not use the orange cast slot shown below; it used old rails laid on top of the cast iron chairs to form the slot. Additionally it did not have the small pink cable support pulleys; it used larger, 14inch diameter pulley wheels spaced every 50 feet.

Section of an illustration of a hypothetical cable tramway system, which seems very similar to the system in use in Edinburgh. Note the cable running through the conduit and over the support pulley

The picture below shows a pile of these iron chairs dug out from beneath Leith Walk, plus sections of old rail that had been used to form the horizontal ties. Notice the chairs are caked in old concrete, as they were set into the conduit when it was being poured.

Cable conduit support chairs, September 2021 © selfCable conduit support chairs, December 2020 © self

None of the cast iron chairs are complete; all are missing their top sections; cut and cracked off. However it was not the excavation works of 2021 that caused this, it were those of 1921! A a book kindly provided to me by Chris Wright has a photo of Hanover Street, c. 1921, on the cover. In this scene, a crowd watches workmen digging up the old cable conduit system during the switch over to electric traction (which was apparently the first use of pneumatic drills in the city). The caption explains that for ease, the workmen only removed the top section of the conduit chairs when removing them; the lower sections were left concreted into their bases. There are a couple of broken sections of chair in the pile of rubble below the boy with the cricket bat.

Edwin Catford’s Edinburgh, cover

The cables themselves were driven from the four winding houses at each of the tramway depots; Henderson Row, Tollcross, Portobello and Shrubhill (off Leith Walk). We see the Shrubhill winding house interior in the images below. The engines, each with two cylinders and producing 500hp, are in the foreground. They are connected to the cable system by the ropes strung between the pairs of enormous drums. The larger drums, in the back ground, were connected to the 10 foot diameter cable-driving pulleys.

Interior of Shrubhill winding house, seen from the side of the enginesInterior of Shrubhill winding house. The two wheels in the foreground are those that would drive the traction cables.

The cables were tensioned on weighted pulleys hung from the wall of the winding house, before exiting the building down a long tunnel from the winding house off Dryden Street at the northern end of the site to Leith Walk. The below photo shows the remains of one of these tunnels being demolished in the 1960s during works outside Shrubhill.

Brick arch of the cable tunnel on the right.

These tunnels ran to large brick chambers beneath the road surface and ran off up and down Leith Walk. Each cable required two pulleys; one for it on its outbound journey and one for it returning back to the winding house. Shrubhill drove two cables, so required two sets of these pulleys in chambers below Leith Walk. The diagram below shows the State Street Cable Car power station in Chicago. The winding engines are in yellow and drive 4 sets of cables. The red and blue cables head off right and left out of the power station. The two green cables are for different lines; they travel to the start of those lines “blind” (i.e. not pulling trams), which is why they are running in between the two sets of tracks, rather than between the rails like the red and blue cables. Each cable reaches the end of its line where it turns around and comes back to the power station. Shrubhill was very similar to this but drove only two cables; one for St. Andrew Square and Leith Walk, which also served the branch to Abbeyhill, the other for the Bridges to Newington.

The Street Railway Journal, 1889

The illustration below shows a cross section of those cables coming to and from the winding house down the tunnels, running around the pulleys in their chambers and then off around the network. The chambers are brick built, with arched steel plate roofs. This is a conceptual railway, but has two driven cables, rather like Shrubhill. Notice the return pulley is inclined so as to be able to sit underneath the outward pulley.

Cables to and from the winding house and running around the large underground pulleys

The below images show the destruction of the brick walls of one of the Shrubhill pulley chambers under Leith Walk. The dark patches are not tunnels, the one on the left is a recess in the chamber walls and the other seems to be a previous collapse that had been filled in with concrete.

Leith Walk at Shrubhill, November 2020 © selfLeith Walk at Shrubhill, November 2020. Notice the cast iron chair section onwards the middle bottom of the photo © self

The image below, taken of the same overall excavation hole as those above, shows the huge steel roof section of the chamber – the frame is almost identical to drawings of one for the terminal pulley of one of the Henderson Row cables. There is a supporting structure of steel I-beams that would have sat on the brick walls and foundations, and the metal sheet sections forming the roof on which the road surface lay. The large pulleys that directed the cables in and out of the tunnels to the winding house sat directly below this.

Shrubhill cable chamber roof structure, November 2020 © self

These chambers, and others around the system (particularly where there were junctions) were manned to make sure the cable was running properly. Children were in the habit of tying a can to a piece of string, then dropping the loose end into the slot in the road, where it would catch the cable and be dragged off up the road creating an amusing racket. If there was any snag or derailment of the cable, they would phone back to the powerhouse, who would disengage the cable until it could be reset or re-spliced, or the offending item untangled from it.

The excavations here also uncovered the structure of the railway tunnel under Leith Walk, where the North British Railway passed beneath. This was incredibly close to the surface (as a result of the tunnel being built after the road surface, and the Town Council refusing to allow the road level to be raised where it passed overhead); the outer skin of the tunnel is about only 30cm or a foot below the surface. Indeed, a special system had to be devised here to support the new tramway as there was not enough space to fit the standard concrete track slab. You will notice a large trough in the tunnel structure here. This, I think, is where the cable for North Bridge to Newington ran, as it was not used for traction purposes here and is described as “running blind” as far as Picardy Place, where it came in to use to go up Leith Street.

Leith Walk railway tunnel, May 2021 © self

The shallowness of this tunnel totally precludes the urban myths of any tunnels under the road running up Leith Walk towards Elm Row from Shrubhill. Those tunnels are actually a single passageway, just large enough for a man to walk up, that ran under the pavement from Mcdonald Road up to Picardy Place, which was to carry the first electricity cables into the city from the McDonald Road Power Station.

When Edinburgh moved to replace its entire horse-drawn tramway with the cable system across the city, for various reasons Leith declined. Up until the last minute, it had been hoped and assumed that a compromise could be reached and that Leith would join; but it declined to do so. The Shrubhill winding house had a third winding drum for a cable round the Leith rails, but it was never used. Instead, the cable ran from the winding house at Shrubhill, turned left down the hill to the municipal boundary at Pilrig Street, and then ran back up the hill towards Edinburgh again. This meant that passengers had to change onto a Leith tram to proceed any further north (and vice versa). This 24 year inconvenience became known as the Pilrig Muddle. In the below photo, an Edinburgh cable car loads its passengers at the terminus of the line at Pilrig Street. In the background, the electric cars of the Leith system wait for the exchange of passengers heading the other way. exactly where this pit is.

The Pilrig Muddle © Edinburgh City Libraries

There was another one of these awkward interchanges on the network, at Joppa, which I like to call the Joppa Jumble. Here the cable line from Portobello met Musselburgh’s electric system and again a change had to be made for through travel. But this was at least at the network end, not the middle of a principal route, and traffic here was much lighter

https://www.flickr.com/photos/johnmightycat/5967127413

The terminus of the cable car lines was always on a short, single line siding of track on a slight incline. If the terminus was a downhill incline; the car would disengage from the cable and run by gravity into the siding, where it would pick up the cable running back the other way with its other gripper. The process was reversed for an uphill terminus; it ran into the siding on the cable, and ran out of it by gravity to the return cable. This was required as the cable could not be gripped where the it ran around the huge terminal pulley to change direction. This is shown by the diagram below, where the terminal pulley is in blue, inclined so as to fit below the street surface. The cable (red and white dashed line) is guided to and from it by the orange pulleys.

Terminus of the Edinburgh Northern tramway from Henderson Row.

Much excitement erupted at the Pilrig Muddle in August 2021 when unexpectedly (considering this shoul dhave been discovered way back during the first round of tram works), an almost completely intact terminal pulley chamber was uncovered, with not one but two huge pulleys, each totally complete and in remarkable condition. Both were still sitting on their original bearings, just as they had been left almost exactly 100 years before when they were covered up and forgotten about!

Side view of the Pilrig terminal pulley chamber and pulleys © selfOne of the terminal pulleys, approximately 8 feet in diameter. Photo Credit: ACamerunner / @aljaroo1874

The Pilrig Muddle pulleys are unusual for two reasons. Firstly, they are mounted vertically, usually they were horizontal. Secondly, they are back to back, which makes little sense for the terminus of the line. I suspect they are vertical as the street is narrower here, so there was less room to fit them in horizontally. And I think there are two back to back in anticipation of the cable being extended down Leith Walk into that burgh (which of course never happened). The red pulley on the right would have returned the Edinburgh red cable back up Leith Walk to Shrubhill. The blue one on the left would have returned the blue Leith Walk cable back down to the Foot of the Walk. If the cable had been extended to Leith, at Pilrig trams coming uphill from Leith would have swapped from the blue to the red cable here as they crossed the civic boundary. Because Leith was never added to the cable system, if I am correct the blue pulley would therefore never have been used.

Side view of the Pilrig terminal pulley chamber and pulleys © self

The below animation shows how a car would have swapped cables here. A car travels with its front gripper engaging the cable. As it approaches the end of the cable, it is released before the gripper gets dragged into the pulley. To move onto the next cable it can either use its momentum (known as a “fly shunt”), can use gravity if it is running down hill, or it can push itself off the cable onto the next one by using its rear gripper. When the front gripper is over the next cable, it can be re-enaged and the car sets off again. This was a laborious (and potentially hazardous) process, so by design a cable car network keeps junctions and switching between cables to a minimum.

Swapping cables © self

If you look closely to the left of the archaeologist squatting on the ground peering into the chamber you can see the conduits for electrical wires on the wall along with a box. This is either for electric lighting or the communication telephone.

Electrics in the Pilrig pulley chamber © self

Pilrig was not “de-muddled” until 1922 after the amalgamation of the Burgh of Leith and its Tramway into that of the City of Edinburgh. Edinburgh quickly decided to adopt the electric system of Leith and rapidly converted one to the other. The picture below shows the Muddle being converted. A cable car has reached the terminus at Pilrig Street and is about to return back up the hill. You can see the slot between the tracks for the cable. The tracks on the right are being relaid for the electric trams and a new junction to connect down the Leith Corporation tracks on Pilrig Street is being incorporated. The centre poles for the overhead wires are already in place. I suspect the reason that the Pilrig pulley chamber was left in such good condition, with its pulleys still in situ, was the speed with which the switchover was made. There was no time to demolish the chamber, remove its pulleys and infill it. The new tracks were simply built over it and connected together one night to allow for running of the electric trams the next day.

De-muddling the muddle, 1922 at Pilrig Street looking up Leith Walk.

When Leith Corporation rebuilt its horse tramway for electric traction in 1904-1905, it constructed a large new depot on Leith Walk. This later became the Leith Depot of Edinburgh Corporation Tramways. Sadly the depot structure was demolished for no good reason about 4 years ago now, but the depot office building remains. During excavations at the rear of this, the brick outlines of inspection pits appeared, where the running gear could have been checked and maintained without having to lift the tram body off of it. The tram rails would have run along the top of these walls, see the lower picture for an example.

Inspection Pits at Leith Depot. These were only ever for electric cars © selfInterior of Leith Depot, pre-1920. © Edinburgh City Libraries

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