Lamps Alight.
Page 19
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Light your lamps at 9.49 in London, 11.1 in Edinburgh, 10.17 in Newcastle, 10.12 in Liverpool, 10.2 in Birmingham, 9.59 in Bristol, and 10.51 in Dublin.
A Heat Retainer for Use when Brazing.
s.5
The sender of the following communication has been awarded the Ws. prize this week: • [1750] "Toby" (Cardiff) writes:—" When heating a frame of a chassis preparatory either to bending it, straightening it, brazing some part of it, or for any purpose, it is often found that the–conductive capacity of the metal is such that the heat is•not retamed long enough for the operation to be carried out. I have found that the following device, which I have now had in use for some years, and which shows now little or no sign of wear, to be very successful for retaining the heat in these circumstances. It is also useful when brazing. It is made of sheet iron, which forms the frame, lined with a mixture . of equal parts of pulped asbestos and fire-clay. The mixture is pressed tightly in place, and in order to assist the container to retain the lining, I riveted thereto a number of key pieces formed of sheet. metal cut and bent in the manner shown on the sketch. (We have had-this redrawn and it is reproduced herewith.—En.) These key pieces are riveted on the inside of the case, at convenient distances apart. "As the lining is drying, it should be compressed occasionally to make sure that it is solid right through, and:so as to eliminate the possibility of its cracking." Roadside Repair to a Driving Chain.
[1751] " A.W." (Dewsbury) writes :—" Some time ago when out driving a steam wagon, and in the' middle of a journey through sparsely populated country, I had the misfortune to break a driving chain. I knew that this chain was well worn, but I think that the cause of the .breakage was really that something, hard had been thrown on to it whilst we were travelling which. had gottin between chain and sprocket, the additional tension on the already weak chain being sufficient to snap it. The method in whic'h. the fracture occurred was also unusual, as the rivet pulled' clean through the end of the link, as shown in,the sketch; which. I enclose. (We have had this redrawn4and it is reproduced herewith.—ED). As I had no ,spare link in my kit and was a long way from a.ny place where it wa,s.likely that I shunld be able to obtain one, it looked as though I wasgoing to be,held up for a day or two. However, eventually, , I managedto patch the chain inri the following manner :— " I persuaded a local blacksmith to bend a piece of mild nteel bar in the form of a square-cornered U, the legs of the U being of a distance apart equal to the pitch of theAchain. The diameter of the material was the same as that of the rivets of the chaip. In each end of this forged-link I bored a .* in. hole. 'This speciallink was fitted as shown in my sketch, and with a'-piece c.f1copper,wire threaded through
the in. hols-, so as to prevent its loss, served to enable me t:..Tomplet-e the journey and to help me to carry on until such time as a rew chain could be fitted."