US1155808A - Draft-gear. - Google Patents

Description

S. HANSSON & I. MUELLER.

DRAFT GEAR.

APPLICATION FILED AUG.5. 1914.

Patented Oct. 5, 1915.

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WITNESSES S. HANSSON 6L I. MUELLER.

DRAFT GEAR.

APPLICATION FILED AUG-5. 1914.

Patented Oct. 5, 1915.

2 SHEETS-SHEET 2.

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SOREN HANSSON AND ISAK MOEICLER, OF NEW GLASGOW, NOVA SCOTIA, CANADA, ASSIGNORS 0F ONE+THIRD TO HENDERSON B. DOUGLAS, 0]? NEIV GLASGOW, NOVA SCOT IA, CANADA.

DRAFT-GEAR.

Specification of Letters Patent.

Patented Get. 5, 1915..

Application filed August 5, 1914. Serial No. 855,209.

T 0 allwhom it may concern:

Be itknown that we, SOREN HANSSON and ISAK MOELLER, residents of New Glasgow, in the Province of Nova Scotia and Dominion of Canada, have invented a new and useful Improvement in Draft-Gear, of which the following is a specification.

This invention relates to draft gears for railway cars.

The object of the invention is to provide an improved draft gear which can be readily adapted for either friction type or twin spring gears, which is of simple construction and positively locks the springs and prevents them from escaping, which is much stronger and less liable to fail than prior draft gears, and which may be cheaply manufactured and can be readily applied to all types of railway'cars.

' The invention comprises the construction and arrangement of parts hereinafter described and claimed.

In the drawings, Figure 1 represents 111 part a plan view, and in part a horizontal section on the line 1.1, Fig. 2, through a draft gear embodying the invention; Fig. 2

is a central longitudinal sectional elevation line .4

thereof; Fig. 3 illustrates at'the left a cross section on the line 3 3, and at the right a cross section on the line 3 3, Fig. 2; Fig.

4 represents at the left a cross section on the line 44, and at the right a section on the Fig. 2; Figs. 5 and 6 are detail views on a larger scale, showing a securing device; and Fig. 7 is a cross sectional view showing the device applied to a friction type gear.

Referring to the drawings, 1 indicates the usual draft sill, connected at one end to the end sill 2 and continuing beyond the body bolster 3, which is provided with the usual centerbearing 4. The draft sill is provided with side plates 5, formed of malleable iron or cast steel and having the proper configuration to support the parts and guide the longitudinal keys, as hereinafter described. As illustrated, these side plates are provided at top and bottom with front and rear stop lugs 6, which positively limit longitudinal movement of the follower plates, as hereinafter described, and also with upper and lower shoulders 7, which form guideways for the longitudinal keys.

The coupler head is indicated at 10 and at its pear end, as at 11, abuts against the front follower plate 12. It is provided with a cross slot 13, through which projects a cross key 14:, :which extends through openings 15 in the draft sill 1, and at one end is provided with suitable head or enlargement 16, and at the other end with an opening '17 to receive the prongs 18 of a securing device, shown as an oval loop or yoke 19,

which loop or yoke is placed around-the end of the cross key and has its prongs bent down. into the opening thereof, as shown in Fig. 5, to prevent the key from escaping from the draft sill. The slots 15 in the draft sill are elongated to permit longitudinal movement of the cross key therein, the

.70 shoulders at the ends of said'slots forming heads cause the'rear follower plate to move forwardly with the longitudinal keys.

The follower plates 12 and 22 travel longitudinally between the side plates 5, the

keys movingbet'ween the shoulders 7 of said side plates, and also along shoulders 7 of the follower plates,which prevent the keys from dropping out. The forward movement of the front follower plate is limited positively by the front upper and lower shoulders 6 on the side plates, while the rearward movement of the rear follower-plate 22 is likewise limited positively by the upper and lower rear shoulders 6 of the side plates. The follower plates are suitably shaped to form two practically cylindrical barrels, being provided with rims or flanges 25 which confine the twin sets of springs 26 abutting said follower plates at their opposite ends. The springs may also be held in place by suitable dowels 27 attached to the follower plates at the centers ofthe springs, this is not necessary.

The springs are preventedfrom escaping, outwardly by the rims of the follower plates and are held apart from each other by the longitudinal keys 21.. Said keys, as shown although on their upper and lower inner edges, as at 29, where they engage and support the springs. The longitudinal keys are of a shape which enable them to be readily used either for twin spring or friction type gears. For example, Fig. illustrates a cross sectional view through a friction type gear, the side keys 21 being reversed 180 degrees from the positions which they occupy in the twin spring arrangement shown in Fig. 1, and having their concave faces 28" fitting the barrel 80 of the gear, and their opposite faces guided in ways formed in the side plates llhis enables the side keys to be manufactured in quantities and utilized without modification in either type of gear.

The draft gear described is simple and can be readily manufactured. it is very strong for the amount of. metal employed and dispenses with the usual drawbar yoke and the riveted connection thereof to the coupler head. Qonsequently, it is much stronger and is less liable to fail than prior draft gears. it also dispenses with the usual special spring separating devices, as the springs are held apart by the side keys themselves.

lVhat we claim is l. [a draft gear, comprising side plates, tear follower plates, longitudinal keys passing thronghopenings in said follower plates and provided with heads at their rear ends, a coupler head connected to the front ends of said longitudinal keys, and

' a pair of parallel springs between said follower plates, the inner portions of said longitudinal keys being arranged to engage said springs for supporting and separating the same.

2. A draft gear, comprising side plates having front and rear stop lugs, follower plates movable between said lugs, longitudinal keys passing through openings in said follower plates and provided with heads at their rear ends, a coupler head connected to the front ends of said longitudinal keys, and springs. between said follower plates, said keys having portions extending inwardly and lying between said springs to support and separate the same.

8. Draft mechanism for twin spring or friction type gears, comprising side plates provided with guideways, follower plates, longitudinal keys passing through said follower plates and movablein said guideways, and-a coupler connected to said keys, each key having one face concave and the opposite face beveled at; its opposite edges and being reversible to two positions in one of which said beveled edges are adapted to support and separate twin springs and in the other of which positions said concave faces are adapted to engage the barrel of friction mechanism.

4. A. draft gear, comprising side plates, follower plates, longitudinal keys passing said follower plates, a coupler head, and a cross key extending through said coupler headand longitudinal keys, and a securing loop surrounding said cross key and having its end portions bent into an opening therein.

5. A draft gear, comprising side plates, follower 'plates, longitudinal keys passing through said follower plates, a coupler head, a cross key extending through said coupler head and longitudinal keys, said cross key being provided with a head lying on the outside of one of said longitudinal keys, and at its other end being provided with an open ing, and a loop surrounding said cross key and having a portion bent into the opening therein.

6. A draft gear, comprising side plates,

follower plates movable therebetween, longitudinal keys having their outer faces concave and their upper and lower inner edges beveled and passing through openings in In testimony whereof, we have hereunto set our hands.

sonnu nansson.

I ISAK MOELLER.

Witnesses:

' SAnIn M. Pn'r'rrs, P. A. MoGnEsoR.

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