US1291402A

US1291402A - Brake.

Info

Publication number: US1291402A
Application number: US10850716A
Authority: US
Inventors: Frank Chadima
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-07-10
Filing date: 1916-07-10
Publication date: 1919-01-14
Anticipated expiration: 1936-01-14

Description

,F. CIHADIMA.

BRAKE.

APPLICATION HLED JULY 10.1916.

1,291,402.. Patented J an. 14, 1919.

III In llll ul narra FRANK CHADIMA, OF CEDAR RAPIDS, IOWA.

BRAKE.

Specification of Letters Patent.

Patented Jan. 14, 1919.

Application filed July 10, 1916. Serial No. 108,507.

To all whom t may concern:

Be it known that I, FRANK CHADIMA, a citizen of the United States, residing at Cedar` Rapids, in the county of Linn and State of Iowa, have invented certain new and useful Improvements in Brakes; 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 artto which it appertains to make and use the same.

rlhis invention relates to brakes of the band compression type, and the object of the invention is to produce an improved brake adapted by its construction to insure quick and uniform expansion of the band, when released, entirely clearing the drum, and correspondingly quick and uniform contact of the band with the drum, in the act of setting the brake, the action being to draw the ends of the band toward each other and vary close to the drum and thereby avoiding practically all side strain on the drum shaft and bearing.

rlhe brake as herein illustrated is shown as applied to the driving mechanism of a Creamery churn, but is applicable to other purposes as well. v

In the accompanying drawing, forming a part of this specification, Figure 1 is a side elevation of a brake embodying my invention. Fig. 2 is an end elevation to the left of the section line 1-1. Fig. 3 is an elevation similar to Fig. 1, showing the brake parts detached.

In the drawing the numeral 5 denotes a part of the main frame of a creamery churn, the frame having a. cross-bar 6 to lwhich the brake apparatus is mainly attached. In suitable bearings 7 is mounted a rock-shaft provided with a hand-lever` 8. The rock-shaft also carries shifter arms 9 cooperating with a sleeve 10 to actuate a clutch, not shown. To the driving shaft 11 is attached the brake-drum 12. Nearly surrounding the drum is an annular ring 13, provided with set-screws 14: at intervals, which may be set to accurately limit the expansion of the copies uf this patent may be obtinea for brake-band 15, shown in Fig. 2 in close contact with the drum. By this means, when the brake-band is expanded it is forced against the set-screws which hold it slightly and uniformly spaced away from the drum. he ring` connects at its lower ends with a bracket 16 attached to the cross-bar 6. Between forked standards 6L are pivoted short bell-crank levers 17 connecting a't 18 with the looped ends of the brake-band. The lcver arms 19 engage with the heads of links 20, whose lower-ends are pivoted to a lever 21, pivoted at 22. The long arm of this lever connects at 23 with a rod 24 hinged at 25 to a short arm 26 of the hand lever 8.

It will Ibe seen that the raising of the hand-lever will operate to disengage the clutch and will set the brake. In the operation of churns, especially, it is desirable that the brake act smoothly, firmly and with precision. This is effected in a very satisfactory manner by the device above described, the band being drawn in from both ends and very close to the periphery of the drum, so

that nearly the entire circumference thereof is brought at once into frictional contact with the brake-band, to which any desired Atension may be applied by the operator through the hand-lever.

Having; thus described my invention, I claim:

The combination of a roclcshaft having clutch shifting arms attached thereto, a hand-lever secured to said shaft, a brakelever carried by said shaft, a pulling` rod linked thereto, a lever to which said rod is connected at its other end, a supporting bracket and pivot for said-last-named lever, a pair of links conne ting with its shorter arm, a pair of connecting bell-crank levers` and a brake-band connecting by its ends with said bell-crank levers.

In testimony whereof I afiix my signature in presence of two witnesses.

FRANK CHADIMA. Witnesses:

G. E. MELso, F. REGAN.

five cents each, by addressing the Commissioner of Patents,

Washington, D. C.