US1576964A

US1576964A - Reverse mechanism

Info

Publication number: US1576964A
Application number: US9977A
Authority: US
Inventors: Gerber Ralph
Original assignee: American Manufacturing & Sales Co
Current assignee: American Manufacturing & Sales Co
Priority date: 1925-02-18
Filing date: 1925-02-18
Publication date: 1926-03-16
Anticipated expiration: 1943-03-16

Description

March 16 ,'1926. 1,576,964

R. GERBER REVERSE MECHANI SM Filed Feb. 18 1925 I5 Sheets-Sheet 1 INVENTOR Ha? I? Gerber March 16 1926.

R. GERBER REVERSE MECHANISM 3 Sheets-Sheet 2 Filed Feb. 18, 1925 March 16 1926. 1,576,964

R. GERBER REVERSE MECHANISM Filed Feb. 18 1925 5 Sheets-Sheet 5 R INVENTOR Zph Gerber I 3 \Q g a .0,

m6 R 8 S 8 AT RNEYJ Patented Mar. 16, 1926.

RALTBH GERBER, or RAYMOND, wasnrne'ron, AssIenon r AMERICAN A'nurAo- TURING- & SALES 00., OF RAYMOND, WASHINGTON,

INGTON.

a oonrona'rron or weennnvnnsn MEcHA'nrsM;

Application filed February To all whom it may concern;

Be it known that I, RALPH Games, a citizen of the United States oflAmerica, and resident of the city of Raymond, in the 6 county of Pacific and State of Washmgton, have invented certain new and useful Improvements in Reverse Mechanisms, of which the following is aspecificatlon, J My invention relates to a reversing: device power transmission shaft, or rather. between the adjacent ends oftwo shafts, whereby continuous motion in one direction in one of these shafts may at will be caused either to produce continnousmotion in the same or in reverse direction. r

My invention relates particularly to that type of reversing mechanisms of which a typical construction is shownin my previous Patent, No. 1,173,567, issued February '29,

The object of my invention is to provide- 7 such improvements upon the reversing mechanism as therein shown, as to make the same more easy of construction, more durable in its operation, and in other ways to simplify and improve thereon. I

The features of my invention which are new and upon which I desire to secure Let- I ters Patent may be. determined by reading the following specification. and a study of the accompanying drawings. The novel features thereof will then bep'articulearly delined by the claim terminating this speci- 'fication.

In the accompanyingdrawings I have shown my invention incorporated in thespecific construction which is now most pre-- ferredby me- It is, however, evident that many of the specific details of construction might be changed without materially altering the invention or departing from the spirit thereof. Figure 1 is a top or plan view of my device.

Figure 2 is'a side elevation thereof. Figure 3 is an end elevation thereof. Figure & is a transversesection taken sub-- 4 stantially upon the broken and offset line l-4 of Figure 5, and Figure 15 is a longitudinal scctionaleievation of my device, Y taken upon the central plane of the shafts,

The two shafts, 1 and 1-0, are the shafts which. are to be connected by the reversing 18, 1925. Serial No.8,977.

mechanisnn One of these shafts may.- be called; the driving shaft and the other the driven shaft. Which of these shafts isused for the respective purpose is immaterial,

either may be the drivingshaft and either the-driven shaft. Upon the shaft 1 is secured acrank disk 2 so as to .befixedv with relation-thereto. Upon the other shaft, 10,

These may be conveniently secured by providing them wlth integral sleevesinto which the ends of the shafts enter andto which they are secured. These crank disks at all times turn in correspondence each with its respectivev shaft.

Mounted upon the shafts, or :upon :the sleeves by whlch the crank disks are secured to the shafts, 1s a casing 5. 'For convenience of constructionthis is preferably made of ,twoparts securedtogether upon a: transverse plane, correspondingwith that of the axis oft'he transverse shaft 4L2. This casing is provided with two friction brake or clutch surfaces, one adaptedVitov be engaged :by a

brake band 15, which brake band is fixedly held againstrotation. When, therefore, this brake band is caused to grip the casing, the latter Wl'li' be held against rotation. The

and '10 at right angles and normally at the center of the distance between the two shafts, although this latter distance may be varied. Mounted to slide uponthis shaft is l a sleeve or block 511 which has crank pins 4 and 40integral therewith and alined with each other extending in opposite directions from the sleeve 4L1- These form crank pins which have sliding 1 and turning bearing in the bore of two spheroidalbearing members 9,

mounted to turn in complement-a1 spheroidal hearings carried by "the

crank disks

2 and 20. For purposes of assembly the spheroidalbearings of the crank disks each include a removable plate,z21' and 22, which 0 and 80, which bearing members are vis secured a corresponding crank diskaQO. 10 of the sort designed to be inserted in a' other-friction or clutch surface of the-casing .cepts the extended axis of the two shafts l are removably fixed to the inwardly facing surface of said crank disks.

By making the crank pins as an integral part of the sliding sleeve 41, greater strength is given to these parts than under the construction illustrated in my patent previously referred to. In said patent the corresponding members 20 thereof had reciprocal movement in a sleeve and were also subjected to transverse bending strains which, under the circumstances would greatly increase the friction and the wear of the parts. By making the crank pins both as an integral member of the beam which also includes the sliding sleeve 411, a more rigid construction is provided and lateral bending efforts within the crank pin parts are avoided. Furthermore, by the construction shown in the present invention, effective greasing of all the parts is better secured by the use of grease or oil within the casing.

As the principle of the mechanical operation of this device is the same as that involved in the device of the previously mentioned patent, detailed reference thereto is not thought to be necessary at this time.

The mechanism employed for controlling the two friction brakes will now be de scribed. A sleeve 6 surrounds and is secured to the sleeve of one of the crank disks, as the disk 20. This sleeve 6 thusparticipates in all of the turning movements of the crank disk 20. This sleeve carries a hood-like member which extends over and covers that section of the casing 5 upon which the friction brake 90 is mounted. Itincludes a radially positioned or disklike section 60 and a series of arms as 61 which extend over the end of the casing and are spaced out wardly therefrom a sufficient distance to accommodate the friction brake band 90. The outer cylindrical section of this member is preferably made of open-work character, as by the use of the bands 61 which are clearly shown in extent and position in Figure 4. The purpose of this hood is twofold; first, to form a support and carrying member for the friction band; second, to form a protection therefor so that the operator is not likely to be brought into contact therewith. The open-work character of construction of this part is due in considerable measure to a desire to have a construction such that the friction band may be removed and replaced conveniently without having to disassemble other parts.

The friction band is really composed of two parts, one a metal band 9 and the other the friction insert or lining member 90. One end of this is secured by a pin 98' which lies beneath one of the bars 61 of the enclosing hood. The other end of the band is supported by a bar 71, which bar isprovided, as is clearly shown in Figure 1, with cam-inclined surfaces 74 so that by reciprocation of this bar the brake may be tightened or loosened in accordance with the direction of movement of the bar 71. The bar 71 is bent in shape, one end thereof, being that end which occupies a radial position with reference to the shaft and the casing, being secured to a sleeve 7 which is mounted so asto be reciprocated upon the sleeve 6. 'lhisreciprocal movement is shown as secured byproviding the sleeve 7 with a peripheral circular groove in which is mounted semi-circular shoe or guide 72, the latter being provided with trunnions 73 which are engaged by notches in the end of arms 83. These arms 83 are shown as being integrally formed upon the ends of a connecting yoke-bar 81, which is pivoted upon journals in frame members 82. To one end of the arms 83 is secured the operating lever 8 by which the brake band operating means are actuated.

The other brake band 15 is operated in a similar manner through the action of a bar 16 secured by one end to the operating lever 8. This has a cam-inclined surface 17 by which the movable end of the brake band is given peripheral movement to apply or release the brake. This portion of the link 16 is provided with a thrust support, adjustable in position. A convenient way of securing this result is to use a set screw 18, which is mounted in a yoke 19 carried by or fori'nin'g a part of the frame or main sup port for the device as a whole. The brake band 9, 90, is also adjustable in the same way, as is best illustrated in Figures 1 and 4. A bar or block 64 is mounted in guides upon the enclosing hood 61. An adjusting bolt 66 screwing through the same bears upon one face of the bar 71 by which the operation of the brake is controlled.

This thrust bolt may be' secured in adjusted position as by a set screw 67. The application and the release of this brake is determined by whether'the thrust bolt 66 is engaged by the straight surface 75 or by the corresponding straight surface at the other end of the cam-incline 74. The brake controlling links or bars 71 and 16 are so constructed and applied to said bars that when one brake is applied the other brake is released.

The gripping of the casing by the brake 9 causes the same to turn with the shaft 10. Therefore, the other shaft 1 must turn in the same direction and at the same rate as the shaft 10. If, however, the brake 9 be released and the brake 15 be applied, the revolution of the casing 5 is stopped and it is held non-rotative. When this occurs the sleeve 41 will, by the action of the crank pins 4 and 10 and of the

crank disks

2 and 20, be caused to reciprocate back and forth upon the transverse shaft 12 and this will result in the two crank disks turning in opposite directions and at the same rate of speed.

What I claim as my invention is:

In a device of the character described, the combination with the two aligned shafts, a casing adapted to turn with the shafts or to be held stationary, the casing having two braking surfaces, a fixedly-secured brake cooperating with one of said braking surfaces, amember rotative with one shaft and carrying a brake band cooperative With the other braking surface, a sleeve rotative with the same shaft but movable lengthwise thereof, a bar carried by said sleeve and supporting one end of the rotative brake band, a bar supporting one end of the other brake band, both of said bars having cain inclines by the action of Which in the reciprocation of the bars the brakes are controlled, and a con trolling lever connected with the sleeve and one of the bars.

Signed at Raymond, Pacific County, Washington, this 6th day of February, 1925.

RALPH GERBER.