US681683A

US681683A - Adjustable ball-bearing.

Info

Publication number: US681683A
Application number: US4501201A
Authority: US
Inventors: Henry Deck
Original assignee: JOHN F BRAUN; WILLIAM P M BRAUN
Current assignee: JOHN F BRAUN; WILLIAM P M BRAUN
Priority date: 1901-01-28
Filing date: 1901-01-28
Publication date: 1901-09-03
Anticipated expiration: 1918-09-03

Description

No. 681,683. Patented Sept. 3, 19m.

' H. DECK. V

ADJUSTABLE BALL BEARING.

(Application filed Jan. 26, 1901.)

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UNTTED STATES PATENT OrrIcE.

HENRY DECK, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO \VILLIAM P. M. BRAUN AND JOHN F. BRAUN, OF SAME PLACE, (COPARTNERS TRADING AS JOHN BRAUN AND SONS.)

ADJUSTABLE BALL-BEARING.

SPECIFICATION forming part of Letters Patent No. 681 ,683, dated September 3, 1901. Application filed January 28, 1901. Serial No. 45,012. (No model.)

To all whom, it may concern:

Be it known that I, HENRY DECK, of the city of Philadelphia, county of Philadelphia, and Stateof Pennsylvania, have invented an Improvement in Adjustable Ball-Bearings, of

which the following is a specification.

My invention relates to adjustable ballbearings for shafts, dvc. and it consists of the improvements which are fully set forth hereinafter and are shown in the accompanying drawings.

It is the object of my invention to enable the bearing to be adjusted with facility for the purpose of taking up wear in the bearing parts.

My bearing was designed by me especially for use on the cutter-shafts of lawn-mowers, and in the drawings I have shown it so applied. I do not mean, however, to limit my invention to this use of the bearing, as it is obvious that it may be applied to a great variety of machines.

My invention resides particularly in the devices for effecting the adjustment of the bear- 2 5 ing-cone. The amount of movement required is very small; but the adjustment must be positive, and lateral movement or rotation of the cone on the shaft should be avoided.

It is the object of my invention to attain these objects by means of an adjusting device which is very simple in construction and may be adjusted with facility.

Figure l is a longitudinal sectional view of an adjustable ball-bearing embodying my in- 3 5 vention; showing the same applied to a lawnmower cutter-shaft. Fig. 2 is a perspective view of the detached adj listing-screw employed in the form of my invention shown in Fig. 1. Fig. 3 is a horizontal sectional view similar to Fig. 1, illustrating a different form of my invention; and Fig. 4 is a perspective view of the detached adjusting-screw employed in the form of the invention shown in Fig. 3.

5 a is the cutter-shaft, which carries the cutters b, the latter being usually secured to spiders 0, carried by the shaft.

d is a part of the side arm or frame upon which the cutter-shaft is j ournaled.

e is a cone-bearing carried by the shaft or and having its tapered or cone-shaped end f projecting into a recess g in the side arm or frame in which the ball-bearings h are arranged.

'5 is the usual disk or plate, located in the recess 9 to receive the thrust of the balls 71,.

The cone e is fast on the shaft a, and the ball-bearing is afforded by the cone end f and the balls It.

So far as the construction has been described it is well known; but in bearings of this character difficulty has been experienced owing to the wear of the bearing parts, and adjustment is necessary to take up this wear. This adjustment I accomplish by moving the cone-piece 6 upon the shaft a; but to properly effect the adjustment means must be employed for positively moving the cone and holding it firmly while the set-screw which secures the cone to the shaft is being tight- 7oened. For this purpose I employ an adjusting-screw having an eccentric connection with the cone, so that when the cone is loosened and the adjusting-screw is turned the eccentric connection will impart a lougitudi- 5 nal movement to the cone upon the shaft.

In the construction shown in Fig. 1 the adj ust-ing-screw j is carried in a threaded lug k on the end spider o and is provided on its lower face with an eccentric recess Z, which engages a lug or pin m, carried by the cone. When the set-screw n is loosened and the adj usting-screw 3' turned, the eccentric connection afforded by the recess Z and pin m will move the cone longitudinally on the shaft or. 8 5 When the proper adjustment is made,the setscrew 71 is tightened. The arrangement of the pin and recess may obviously be reversed. The extent of adjustment afforded by these devices is very small; but it is sufficient for the'purpose of taking up the wear. It will be observed that the adjustment is effected with very little turning or lateral movement of the cone. Such lateral movement is objectionable, as it is liable to injure the shaft 5 and changes the bearing-point of the setscrew n. There is of course a slight lateral movement of the cone; but it is so small that it is not objectionable.

In the construction shown in Fig. 3 the ad justing-screw is screwed intoathreaded hole lnected with the cone, and adapted when 0 in the cone and is provided on its end with an eccentrically-located -projection 19, which fits a recess 1" in the shaft. In this case as the position of the eccentric-head p is fixed with reference to the shaft the turning of the adjusting-screw will move the cone longitudinally on the shaft. A jam-nut 8 may be employed to lock the adj listing-screw against accidental movement. This is not, however, necessary. The head 19 is rounded or ballshaped to permit it to turn in the recess 1" when the cone is adjusted. This is rendered necessary because of the slight lateral movement of the cone and because play between the head 19 and recess r is not permissible.

The details of construction may be varied without departing from the invention.

\Vhat I claim as new, and desire to secure by Letters Patent, is as follows:

1. In an adjustable ball-bearing for shafts, &c., the combination with the ball-socket and balls, of a cone carried by the shaft and adapted to be moved longitudinally thereon, and an adjusting-screw eccentrically conturned to positivelymove the cone longitudinally on the shaft in either direction.

2. In an adjustable ball-bearing for shafts, 850., the combination with the ball-support and balls, of a cone carried by the shaft and adapted to be moved longitudinally thereon, and an eccentric adjusting device engaging said cone and adapted when turned to positively move the cone longitudinally on the shaft in either direction.

3. In an adjustable ball-bearing for shafts, &c., the com biuation with the ball-support and balls, of a cone carried by the shaft and movable longitudinally thereon and an adjusting-screw having a pivotal connection with the shaft and eccentrically connected with theeone.

In testimony of which invention I have hereunto set-"any hand.

HENRY DECK.

\Vitnesses:

J EssE GILBERT, THEO II. ROTH.