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The photographer's stamp on this photograph reads: HALL & CO., Commercial Photographers, 20 Hunter Street, Sydney..
On the left hand side of the photo of the exterior of the Singapore main Totalisator Building in the image below identified as FIG. 41, is a photo of the internal view of the ground floor level of the Singapore Totalisator Building. The annotation for this internal view of the ground floor level reads: FIG. 40. Interior of the ticket selling room Singapore Turf Club Totalisator Building. This selling room is where the sixteen J5 Ticket Issuing Machines are located which are connected to the adding units upstairs shown in the image above. I deduce that these TIMs are not directly connected to the adders rather that they are connected via a front end processor. The front end processor contains Time Division Multiplexers. I come to this conclusion by the observation that the adders only have two or three escapement wheels rather than 16, one for each of the TIMs, which would be required otherwise. The front end system is required to multiplex multiple ticket issuing machines onto each of the solenoids that control the escapement mechanisms that in turn control the rotation of the escapement wheels. The investment is represented as angular displacement of the output of the adding shafts. Looking at the nearest two adder/display units in the image above, the adder part of the unit can be discerned protruding out to the right from the lower right hand end of the counter wheels. In a higher resolution copy of this image it is clear that there are at least two escapement wheels with their associated escapement mechanisms and solenoids. It seems there is an outline of a third escapement wheel. If there are only two escapement wheels, then each will support 8 machines giving a total of 16. There is a larger higher resolution image of the Singapore Selling Room, similar to the one in the image below identified as FIG. 40, which follows the image at the top of this page in the photo gallery of this website. To view this higher quality image, click on the image above and select the image thumbnail following the thumbnail of the image above.
There is a full sized image of the page shown below in the photo gallery of this website. To view this full sized image, click on the image above and scroll down to the section titled Miscellaneous Images and select the image thumbnail with associated text starting This is a page extracted from a company document titled The PREMIER (JULIUS) AUTOMATIC TOTALISATOR .
Page 20 PREMIER (JULIUS) AUTOMATIC TOTALISATOR
Additionally I have, what I thought was a photocopy of the document mentioned above, PREMIER (JULIUS) AUTOMATIC TOTALISATOR except that it has 1930 added under the title. I was surprised to find that although they both cover similar information it is presented very differently. In this photocopy, I discovered information I had not seen before. There is an image of the adder and counter wheel display unit that is used in this installation and are visible in the image at the top of this page. The poor quality of this photograph prohibits me from presenting it here.The annotation for this image reads Horse Unit of small type machine. Associated text indicates that the largest type unit has recorded over 250,000 bets per minute, the medium size records at 3000 bets per minute and the small machine at 1000 per minute. As a contrast to the Horse Unit of small type machine, you can view an image of the largest type unit as mentioned in the document, on this website. Click on the image at the top of this page and scroll up to the Photo Gallery section titled Randwick Racecourse Sydney New South Wales Then scroll down again and select the image thumbnail with associated text starting This image shows an ornate early large system adder.
Following is an extract from the ATL (Automatic Totalisators Limited) booklet titled The Computer Tote 1974 which relates to Singapore in the computer era, 48 years after the Julius Tote was installed. The totalisator business had changed considerably in the near half a century, going from 16 TIMs in 1926 to 256 in 1974 when this article was written! And now the extract:
The Singapore Turf Club and Automatic Totalisators Limited were associated with one another long before the computer tote was ever thought of. That association goes back as far as 1926, in the days of the T-model ford, when the club commissioned A.T.L to install its first Electro-mechanical Totalisator. As the popularity of racing in Singapore grew, so did the demands on the Club's totalisator operations and over the years additional equipment has been installed to keep its on-course betting service to the public continuously updated.
Last year, when the progressive Singapore Turf Club decided to go electronic and install a Totalisator System with a capacity to meet its rapidly growing turnover in betting it selected A.T.L's newest computer system.
The A.T.L Computer Totalisator System using two Digital Equipment Corporation PDP 11 Computers is flexible and capable of any required expansion to meet future growth.
The Singapore computer tote caters for standard betting pools, Win, Place and Forecast with a current capacity of 256 Ticket Issuing Machines.