US483548A

US483548A - Arthur george evans

Info

Publication number: US483548A
Authority: US
Publication date: 1892-10-04
Anticipated expiration: 1909-10-04

Description

(No Model.)

A. G. EVANS.

BEARING FOR SIGNAL AND SWITCH RODS.

No. 483,548. Patented Oct. 4, 1892.

UNITED STATES PATENT OFFICE.

ARTHUR GEORGE EVANS, OF WESTMINSTER, ENGLAND.

BEARING FOR SIGNAL AND SWITCH RODS.

SPECIFICATION forming part of Letters Patent No. 483,548, dated October 4, 1892. Application filed June 20, 1892. Serial No. 437,394. (No model.) Patented in England July 31. 1891, No. 13,004-

To all whom, it may concern:

life it known that I, ARTHUR GEORGE EVANS, c1v1l engineer, a subject of the Queen of Great Britain and Ireland, residing at 116 Palace Chambers, Bridge Street, Westminster, in the county of Middlesex, England, have inyented certain new and useful Improvements in the Supports or Bearings for the Operat' lug Rods of Signals and Switches and other Railway Appliances; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Letters Patent for this invention have been obtained in England, No. 13,004, dated July 31, 1891.

This invention has for its object an improvement in the supporting guides or rollers upon which the rods employed for communicating movements to railway signaling apparatus rest and move. These rods have frequently to move objects, such as a pair of switch-points, at a considerable distance from the operatinglever. In cases where the switch-points are both worked and locked by one rod it is especially desirable that friction should be reduced to a minimum.

With my invention I provide, as ordinarily, two rollers, a lower one and an upper one, the rod operating between the two normally resting on the lower one. I arrange that both the rollers have their axes projecting on each side, and recesses or shelves are provided for the axes of the rollers to revolve upon, or slots in the side of the casting forming the frame of the roller are provided, the axes of the rollers revolving similarly in these slots. Assuming that the rod is being supported by the bottom roller, when the rod is pulled the pulley revolves on its axis along the path on the lower side of the recess, shelf, or slotted hole; but in the return movement when a push is given to the rod it frequently happens that the rod buckles and pressure is put upon the top roller. In order to provide that this roller should give the same assistance to the return motion as the lower one does in the initial movement, I provide that this roller also moves longitudinally as well as revolves, the two rollers being alike in the fact that when the rod is pushed or pulled or when the rod presses upon either of them the pulleys are caused to revolve and their axes roll along their respective paths.

I am aware that arrangements have been provided whereby the lower roller is made with the projecting axis and the said axis rolls along the paths or shelves; but, as far as I am aware, my invention is novel with reference to the top roller. I also provide that where two or more rollers are required in a set the standards or side frames forming such sets may be built up suitably, so that they may be added to or taken away from without disturbing the other rollers in the set, and the whole is so arranged that the bases of the said rollers interlock with each other and are secured to the wooden or iron frames, to which the rollers are usually fixed by coach screws or bolts.

It will be seen on reference to the drawings that I have abolished the several bolts or rods upon which the rollers revolve. I am aware that in certain cases the bolt or rod in connection with the lower roller has been abolished; but I am not aware that this has ever been done as regards the top roller.

It is obvious that my invention is applicable to the various sections of poin't-rodf0r instance, either the tubular-section or the channel-section point-rod or any other form that may be desired.

In order that my invention may be better understood and more readily carried into effect, I will proceed to describe the drawings hereunto annexed.

The same letters refer to the same parts in the several figures.

Figure 1 is a side view of my roller, showing the side standard with the rollers in position and the operating-rod between them. Fig. 2 is a front view,partlyin section. The sectional portion of this figure is a section of one of the standards. Fig. 3 is a side view of the bottom roller. Fig. 4 is a front view of the bottom roller. Fig. 5 is a side view of the top roller. Fig. 6 is a front View of the top roller. Fig. 7 is a plan of the standards with the rollers removed, showing the way in which they are built up. Fig. 8 is a front view of my roller arranged for the channeliron section of point-rod instead of tubular section, as Figs. 1 to 7 show. Fig. 9 isa side invention.

View of the top roller of Fig. 8. Fig. 10 is a side view of the bottom roller of Fig. 8.

ais thebottom roller for tubular point-rod, Figs. 1 to 7, inclusive.

a, is the axis or pivot or spindle on each side of the bottom roller a.

a and a are the side projections of the bottom roller a, which reduce the friction, keeping the larger sides of the roller from touching the insides of the standards.

b is the top roller.

b (on each side) is the spindle of the top roller. V V

i b and b are the side projections of the top roller, provided for lessening friction, keeping the remaining portionof the roller fromtouching the insides of the standards.

0 is the elongated path or slot in the side of; the standard provided for the bottom roller, and d is the similar elongated path or slot provided for the top roller.

c is the lower part of this slot, upon which the spindle a of the bottom roller revolves.

While describing the slot for the bottom roller it will be understood that the upper part of this slot 0 is of no value or use in connection with the bottom roller, as the latter is never supposed to touch the top part, the bottom part being the one upon which the roller revolves. Itisobvious thatthis could be modified, as not being in any way essential to my If desirable, the top side of this elongated slot 0 may be made of a circular form, approximating to the middle of the rib e, and I therefore lay no claim whatever to the upper part of this slot or to the fact of the slot being inclosed at its upper side. With any form of roller there must be a termination to the travel of the roller for thesake of convenience and economy, and for this termination ends or stops must be provided. I therefore lay no claim to the fact of this slot being provided with ends, as it is obvious no practicable roller-standard could be designed without them or their equivalents.

d is the lower path of the upper slot d. In connection with this it may be observed that this part is only of use for preventing the roller from falling and bearing upon the top of the rod, which, however, would not be detrimental to the action of my invention; but it will be understood that when the rod is put into compression the spindle b of the roller 1) may take its bearing upon the upper path d of the slot (1.

f is the tubular point-rod which is supported upon the bottom roller (1.

g are the holes, Fig. 7, by which the standards are bolted to their supports, either wood or iron.

7?. 'h2 are the beveled ends of the feet'of the standard which fit into a corresponding beveled recess k k in the next standard. 7

l is the end of the standard which is square and which is provided for enabling the standards to fit into each other more accurately.

m is the bottom roller, Fig. 8, designed for the support of channel-iron point-rod. The spindles and recesses or slots and the way 1n which the spindles operate in the recesses or slots are the same as inFigs. 1.to 7. if

n is the channel-iron rod, which is supported: upon the roller 0 is the top roller, Fig. 8, foriuse with chan ncl-iron point-rod. Again, the spindles and elongated slots through which this roller is operated are the same'as in Figs. 1 to 7, illustrated with regard to the tubular point-rode. In the rollers 'm and o slight projections are provided for a'similar purpose to those hereinbefore referred to (a and a and b and b in the rollers for tubular point-rod, Figs. 1 to 7. A brief description of the working of my invention is as follows, (the same of course refers to either channel or tubular point-rodz) When the rod is operated and the'rod is in tension-that is to say, when there is a pull given to the rod by the operating-lever, or it may be occasionally. that a push is given to the redat all events when the top roller is not brought into operation and the rod does not bear upon it, the rod revolves. the lower roller upon its axis, the said axis travels along the lower paths 0 of; the elongated slots 0, and. if the travel of the rod should be longer than the travel allowed for by the length of the paths 0' when the roller arrives at the end of its travel it is simply revolved as a fixed roller, similar to the ordinary rollers. Again, when the rod is put into compression to the extent that the rod buckles and bears upon the top roller, thereby pressing the spindle b upon the upper path (1 of the slot 01, a similar action takes place, the roller 1) is revolved on its axis 12' until it gets to the end of its travel,

and if there is still required a further 'movement of the rod when the said roller has arrived at the end of its travel the roller is simply revolved on its axis 73' like a fixed roller, which has no elongated paths, as is now the usual custom.

Having fully described my invention, I wish it to be distinctly understood that I do not claim as novel a bottom traveling roller; neither do I claim the inclosed elongated slots in which the bottom roller operates; neither do I claim the particular shape of the elevation of the standard; but

What I do claim, and desire to secure by Letters Patent, is-

1. In supportinguides for rods employed in railway signaling, an elongated path or slot upon which a movable top roller is free to travel to and fro, the said roller having movement communicated to it by point-rod used or employed for communicating to-andfro movements on railways in connection with railway signaling apparatus, the said roller or pulley having spindles or pivots of relatively-smaller diameter, substantially as hereinbefore described.

2. In supporting-guides for rods employed in railway signaling apparatus communica ing to-and-fro movements on railways, the

combination, with a bottom roller or pulley provided with spindles or pivots of relativelysmaller diameter arranged to roll either on a recessed shelf on the side cheek of a standard or along the lower side of an elongated slot provided in such standard, of a top roller also provided with spindles or pivots of relativelysmaller diameter arranged to roll on a recessed shelf on the side cheek of a standard or upon the upper or lower side or path of an elongated slot provided in the standard, substantially as and for the purposes herein set forth, and as illustrated upon the drawings.

3. The combination, with a longitudinal rod,