US2484400A

US2484400A - Shaft puller

Info

Publication number: US2484400A
Application number: US762296A
Authority: US
Inventors: Arthur G Brown
Original assignee: Arthur G Brown
Priority date: 1947-07-21
Filing date: 1947-07-21
Publication date: 1949-10-11
Anticipated expiration: 1966-10-11

Description

A. G. BROWN SHAFT FULLER 2 Sheets-Sheet 1 Filed July 21, 1947 Inventor Arthur G. Brown By W and

A. G. BROWN SHAFT FULLER 2 Sheets-Sheet 2 Filed July 21. 1947 Inventor Arthur 6.- Brown Patented Oct. 11, 1949 UNITED STATES PATENT OFFICE SHAFT PULLER. Arthur G. Brown, Cherry, Ill. Application July 21, 1947, Serial No. 762,296

1 Claim. (01. 29-283) This invention relates to new and useful improvements and structural refinements in shaft pullers, and the principal object of the invention is to provide a device of the character herein described, which may be conveniently and effectively employed for the removal of journals from corn picker rollers when such journals are in need of replacement.

A further object of the invention is to provide a shaft puller which, in addition to its primary purpose above outlined, may also be effectively employed for the pulling of shafts, axles or the like, from housings or from similar parts of machinery.

Another object of the invention is to provide a shaft puller which is simple in construction, which will not easily become damaged, and which may be quickly and easily manipulated.

An additional object of the invention is to provide a shaft puller which will readily lend itself to economical manufacture and which is otherwise well adapted for the purpose for which it is intended. 1

With the above more important objects in view, and such other objects as may become apparent as this specification proceeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in which:

Figure 1 is an elevational view of the invention.

Figure 2 is a further elevational view, taken in the direction of the arrow 2 in Figure 1.

Figure 3 is a cross-sectional view, taken substantially in the plane of the line 3-3 in Figure 1.

Figure 4 is a cross-sectional view, taken substantially in the plane of the line 44 in Figure 1, and

Figure 5 is a cross-sectional view, taken substantially in the plane of the line 5-5 in Figure 1.

Like characters of reference are used to designate like parts in the specification and throughout the several views.

Referring now to the accompanying drawings in detail, the invention consists of the shaft puller designated generally by the reference character In, the same embodyin in its construction a frame If which includes a plurality of upwardly convergent, upstanding legs 12 which support at the upp r ends thereof what will be hereinafter referred to as the work engaging plate 13.

This plate is formed substantially at the center thereof with an aperture Hi, the purpose of which will be more fully hereinafter explained, and it will be also noted that a plurality of upwardly extending support rods l5 are secured at the lower ends thereof to the plate 13, the upper ends of the rods carrying a rigidly mounted guiding plate l6 which is disposed in spaced parallel relation to the plate l3, as will be clearly apparent.

A pair of spaced parallel guide rods 11 extend slidably through the plate 16, the upper end portions of these rods (l1) being rigidly connected together by means of a transversely extending cross-bar 18, while the lower end portions of the rods are rigidly connected to what will hereinafter be referred to as the carrier [9.

It may be explained at this point that suitable expansible means, such as for example, a hydraulic jack 20 of conventional design, is interposed between the plate I6 and the cross-bar 18, that is to say, the base 2| of the jack rests upon the plate l6, while the projectible and retractible plunger 22 of the jack bears against the undersurface of the cross-bar l8. Needless to say, the jack 2!! is actuated by means of a suitable lever 23, as will be clearly understood.

Theaforementioned carrier l9 includes in its construction a plate having a substantially U- shaped cross-sectional configuration, (as is best shown in Figure 1) the closed end portion medially the length of the plate being removed as at 24, so as to provide a pair of spaced end portions 25 to which the aforementioned rods I! are secured.

It will be noted that the U-shaped plate forming the carrier I9 is disposed in an inverted position, and a pair of spaced parallel shafts or pins 26 extend transversely through the carrier and project at both ends therefrom. Suitable hand knobs 21 are secured to the projecting end portions of the pins at one side of the carrier, While a pair of gears 28 are secured to the pins at the relatively opposite side of the carrier, the gears 28 bein in mesh, as is best illustrated in Figure 4.

Finally, a pair of coaoting cam members 29 are secured to the mid-portion of the pins 26, the members 29 being disposed between the side pieces of the U-shaped carrier [9 and each including a toothed cam surface portion 30, as indicated in Figure 5.

The corn picker roller assembly 3| on which the invention is primarily intended to be used, consists of a roller 3'2 provided in the ends thereof with a pair of longitudinally projecting journals 33. These journals are pressed into suit- 3 able bores 34 with which the end portions of the rollers are provided, and after the journals have been subjected to a certain amount of wear, it becomes necessary to remove the journals from the bores 34, in order to facilitate replacement.

In such event, it is only necessary to place the roller assembly 3! in a substantially vertical position under the plate 13, whereupon the upper of the journals 33 may be passed upwardly through the aforementioned aperture 14 in the plate [3, while 'the adjacent end of the roller 32 engages the underside of the last mentioned plate.

The device is then so adjusted that the cam surfaces 30 of the members 29 engage the diametrically opposed sides of the upwardly projecting journal, whereupon, by simply actuating the jack 20 so as to raise the: cross-bar [.8 and.

the associated carrier 19 in the direction of the arrow 34, the journal gripped by the members 29 of the carrier I9 will-be pulled upwardly and outwardly from the bore 34, While the roller 32' remains relatively stationary, by virtue of its contact with the underside of the plate l3.

Needless to say, during the pulling operation, the toothed surfaces 300i the members 29 will be urged into a firm and a secure gripping engagement with the journals by virtue of the eccentric or cam-like configuration of the gripping members. However, it may be added that the gripping engagement of the members 29 withthe journals is not such that it would damage or mar the work.

The members 29 may be disengaged from the journal (after the latter has been pulled) by simply rotating one of the knobs 2 I, which action; through the medium of the meshing gears 28, will result in simultaneous rotation of the cam members, as will be clearly apparent.

Finally, it may be added that while a hydraulic jack (20) has been illustrated in the accompanying drawings, a conventional screw jack, or the like, may, of course, be employed.

It is believed that the advantages and use of the invention will be clearly apparent from the foregoing disclosure and. accordingly, further description thereof at this point is deemed unnecessa-ry.

a While in the foregoing there has been shown and described the preferred embodiment of this invention it is to be understood that minor changes in the details of construction, combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as claimed.

Having described the invention what is claimed as new is:

In a shaft puller, the combination of a supporting member including a pair of U-shaped side plates disposed in spaced parallel relation and a pair of top plates integrally connecting upper edges of said side plates, said top plates being provided with apertures to receive a pair of actuating rods, a pair of spaced parallel shafts rotatably journaled in intermediate portions of the side. plates. andlextending transversely of said member, a pair of coacting cams secured to said shafts between the side plates and having toothed work-engaging peripheries, a pair of meshing gears secured to said shafts eXteriorly of said member whereby said cams may be rotated simultaneously in opposite directions, and an actuating knob provided at least on one of said shafts exteriorly of said-member.

ARTHUR G. BROWN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name Date Messinger Aug. 9, 1910 Bayles Jan. 1, 1924 Coval Mar. 11, 1924 Ragsd'al'e Aug. 10, 1926 Hockensmith July 2, 1935 Heimbach June 29, 1937 Gonser et a1. July 20, 1937 Wyscaver Nov. 4, 1947 FOREIGN PATENTS Country Date Germany July 18, 1917 France Sept. 16, 1915 Number Number