US1140171A - Cattle-guard. - Google Patents

Description

J. LAWRIE 81 D. F. BRAZEL.

CATTLE GUARD.

ILED MAR. 19, 1913. RENEW ED OC T. 21. 19m

lCATlON F Patented May 18, 1915.

2 SHEET$SHEET I.

INVENTOHS John Lauvwia,

David F. Brazel, By M ATTORNEYS J. LAWRIE & D. F. BRAZEL.

CATTLE GUARD.

APPLICATION FILED MAR.19.1913- RENEWED 00121, 1914.

1 1%,; 17 11 o Patented May 18, 1915.

2 SHEETS-$HEET 2.

WITNESSES I INVENTORS dohn Lawrie,

David F. Braze! THE NORRIS PETERS CO, PHOT0 LITHO.. WASHINGTON, D. C.

UNETED SFg ATEN @FFFQE.

JOHN LAWRIE AND DAVID FREDERICK BRAZEL, 0F THABANCHU, ORANGE FREE STATE, SOUTH-I AFRICA.

CATTLE- GUARD.

LMLQJ 71.

Specification of Letters Patent.

Patented May 18, 1915.

Application filed March 19, 1913, Serial No. 755,357. Renewed October 21, 1914. Serial No. 867,902.

To all whom it may concern:

Be it known that we, JOHN LAWRIE and DAVID FREDERICK BRAZEL, subjects of the King of Great Britain, residing at Thabanchu, Orange Free State, South Africa, have invented a new and Improved Cattle-Guard, of which the following is a full, clear, and exact description.

Our invention relates to cattle guards adapted to be placed between the rails of a railway track adjacent to a crossing, and at the outer sides of the rails, to deter cattle from taking the direction of the track.

It is a design of our invention to provide a cattle guard having novel guard elements so supported as to have marked instability to the tread of the cattle. It is also a design of our invention to improve in various particulars devices of the indicated character, to the end that efliciency in operation may be promoted, as well as increased durability and economy of manufacture, and to provide elements that may be conveniently and properly assembled in place by unskilled labor.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view representing a practical embodiment of our invention; Fig. 2 is an end view on an enlarged scale, with elements in section, for the most part on the indicated line 22 of Fig. 1, other parts being broken away; Fig. 3 is an end view of a section of our improved cattle guard, on an enlarged scale, with parts broken out, a track rail being in section on about the line 83 of Fig. 1; Fig. 4 represents one of the transverse bars that carry the guard elements; Fig. 5 represents one of the transverse bars at the ends of a section; and Fig. 6 is a detail transverse vertical section at an end of one of the transverse end bars, and showing in section a portion of the guard element and the supporting means for the said bar.

In constructing the illustrated example of our invention frame bars 10 are provided, ranging longitudinally of each section of the guard, provided with legs 11 having inwardly bent flanges 12 constituting feet which are secured by lag screws 13 or the like to the sleepers 14 in a proper position relatively to the track rails 15. The frame bars are formed with a series of vertical slots 16, opening at the tops of the bars, the bottoms of the slots constituting bearings for transverse bars 17 .Overlying the frame bars, cap plates 19 are provided, suitably secured as by screws 20 to said frame bars. In addition to the slots, the outer frame bars of the outer guard sections are pierced near the ends, and also at about the center, to provide holes 16 for receiving additional transverse bars 17 The bars 17 are formed with fixed shoulders 21 at each end, spaced apart to receive between them the adjacent frame bar, the transverse bars being thus adapted to be dropped into the slots 16 and to be removed therefrom when the cap plate 19 is removed. The bars 17 on the other hand, have at one end the fixed shoulders 21 and at the opposite end an inner, fixed shoulder 21", the extreme end adjacent to the shoulder 21 being threaded as at 21, to receive a nut 21, the threaded portion of the bar being desirably pierced to receive a cotter pin 21 for fastening the nut. Thus the bars 17 may be dropped into slots in an inner frame bar 10, and the opposite end is adapted to be passed through a hole 16, and then to receive a nut 21 the nuts thus serving to clamp the transverse bars in the frame ars.

Each transverse bar 17, 17, carries its complement of separate guard elements 18 strung thereon; each guard element is provided with a series of radial projections, desirably'in the form of pyramidal spurs 18, and the body of a guard element is in the form of a ring, the inner diameter of the bore of which is materially greater than the diameter of the transverse bars, so that the ring freely hangs eccentrically 011 a bar and is adapted to have a swinging movement in either direction transversely of the transverse bar, and toward and from the guard elements on an adjacent bar; similarly the guard may bodily rise vertically, the various movements thus permitted the guard elements contributing to increase the instability of the said elements to the tread of cattle.

Having thus described our invention, we claim as new and desire to secure by Letters Patent 1. A cattle guard, comprising longitudinal frame bars forming the sides of the guard and having legs thereon formed with securing flanges constituting feet, said bars being formed at intervals between their ends with vertical slots extending through the tops bearings at the bottoms of the slots; transverse bars of substantially round cross section extending between the frame bars, certain of the transverse bars being'received at one end in the adjacent slots of the frame bars and formed at said end with: apair of fixed shoulders spacedto receive a frame bar therebetween, and at the opposite ends with an inner fixed shoulder and with a threaded end adapted to pass through the mentioned holes of the adjacent frame-bar, the threaded ends being provided with nuts to clamp the frame bars; the intermediate transverse bars having. at both ends pairs of fixed shoulders spaced to receive the frame-bars therebetween, those portions of the intermediate transversebars between the fixed shouldersbeing adapted:to tlfieadjacent' slots,

to bedropped thereinto, and to be lifted therefrom; cap plates overhanging the tops of the frame-bars and: closing the ends of transverse bars in one direction andto rise bodily on the said transverse bars.

2. A cattle guard, comprising side members, transverse bars supported by said side members and spaced from each other, and guard elements mounted on the transverse bars,. the guard elements each consisting of a ring having a bore of a diameter materially greater than the diameter of the bar,

the rings freely and eccentrically hanging on the bar to swing" transversely thereof in either direction. and being free to be moved bodily in a vertical direction. 7

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JOHN LAWRIE. DAVID FREDERICK BRAZEL.

Witnesses:

D. J. GILES. V. EGGEN.

copies of this patent may be obtained tor Me cents each, by addressing the Commissioner of Patents, Washington, D. G.

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