US297130A

US297130A - holcomb

Info

Publication number: US297130A
Authority: US
Publication date: 1884-04-22
Anticipated expiration: 1901-04-22

Description

(No Mo'dl.)

E. M. HOLOOMB 8?; F. E. MILLER.

GAR BRAKE ATTACHMENT. b No. 297,130. v PatentedApr. 22,1884.

WITNESSES: w INVENTOR: I 771/. 7551M?!) K r M 6 mm BY [z qToRNE'TZ NITED STATES PATENT OFFICE.

ELI M. HOLCOMB, OF BAY SPRINGS, AND FREDERIcK E. MILLER, 0E EVELINE, MICHIGAN; SAID HOLGOMB ASSIGNOR TO SAID MILLER.

CAR-BRAKE ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 297,130, dated April 22, 1884.

Application filed August 27, 1883.

T0 aZZ whom izi may concern.-

Be it known that we, ELI M. HoLcoMB, of Bay Springs, Charlev'oix county, Michigan, and FREDERICK E. MILLER, of Eveline townshipfCharlevoix county, Michigan, have invented a new and Improved Gar-Brake Attachment, of which the following is a full, clear, and exact description.

The object of our invention is to provide a new and improved attachment for protecting the ratchet and pawl of a car-brake from rain and snow, and for facilitating the releasing of the car-brake after the same has been drawn up tight.

The invent-ion consists in the combination, with a ratchet-wheel and a beveled pawl pressed against the wheel, of avertically-movable plate provided with a downwardly-projecting wedge and a prong surrounded by a spring, which presses the wedge-plate upward. \Vhen the plate is pressed downward, the beveled edge of the wedge acts on the beveled edge of the pawl and disengages it from the ratchet-wheel, all the parts being inclosed in a casing to protect them from rain and snow.

t'achment for car-brakes, parts being broken away. Fig. 2 isa partly-sectional plan view of the same, the top plate of the casing being removed. Fig. 3 is a sectional view of the same on the line as m, Fig. 2, parts being broken away.

A casing, A, is secured to the car platform or roof by means of screws or bolts passed through lugs or jaws in the said casing, and in this casing a ratchet-wheel, B, is contained, which is keyed on the vertical brake-shaft O, which passes through the top and bottom of the casing, and is provided with the usual hand-wheel, l), at its upper end. A pawl, E, pivoted in the casing, has its free end pressed against the teeth of the ratchet-wheel by a spring, F, held between the same and a Spur, provided for that purpose. A wedge, G, and a downwardly-projecting prong, G are united with a plate, G, having a flange or top plate, 9, at its upper end. The plate G projects through a diagonal slot in the top of the casing, and the bottom of the casing is pro- (No model.)

vided with a diagonal slot, J, and an aperture, K, through which the wedge G and the prong G pass. The beveled edge of the wedge G is to rest against the beveled side or edge of the pawl E, facing the ratchet-wheel. A spiral spring, L, surrounding the prong G", presses the wedge-plate upward. As the pawl E is always pressed against the ratchetwheel by the spring F, it at all times locks the ratchet-wheel automatically. If the ratchetwheel is to be released, the plate G is pressed downward by the foot, and the beveled edge of the wedge, acting on the beveled side of the pawl, forces the pawl from the ratchetwheel, which is thus disengaged. As soon as the pressure is removed from the plate G, the 70 spring L forces it upward, and the spring F presses the pawl against the ratchet-wheel again.

The casing A, containing the ratchet-wheel, paw], wedge, and spring, protects them from rain'and snow, and prevents their being clogged by dust, cinders, &c. I

Having thus described our invention, we claim as new and desire to secure by Letters Patent-- 8o 1. The combination, with a ratchet-wheel and a springpressed pawl having a beveled side, of a vertically-sliding and spring-pressed plate having a wedge-shaped projection resting against the beveled side of the pawl, substantially as herein shown and described.

2. The combination, with the ratchet-wheel B, the spring-pressed pawl E F, having a beveled side, and the casing A, inelosing the same, provided with a slot in its top and a slot and aperture in its bottom, of the plate G, provided with the wedge G and prong G and the spring L, substantially as herein shown and described.

3. The combination, with'a ratchet mounted 9 5 on a brake-shaft and contained in a casing, of a pawl pressed against the edge of the wheel by a suitable Spring, and a plate held to move vertically in the casing and provided with a wedge adapted to act on the pawl, and with a downwardlyprojecting prong surrounded by a spring for pressing it and the plate upward, substantially as herein shown and described.

ELI M. HOLOOMB, WVitneSses: FREDERICK E. MILLER.

CHAS. G. LEWIS, J OHN FESSENDEN.