US700633A

US700633A - Means for securing center pivots to axles in guns.

Info

Publication number: US700633A
Application number: US8891402A
Authority: US
Inventors: Gustav Ehrhardt
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-01-08
Filing date: 1902-01-08
Publication date: 1902-05-20
Anticipated expiration: 1919-05-20

Description

- 00.. 700,633. PatentedMay 20, 1902.

G. EHRHARDT.

I MEANS FOR SECURING CENTER PIVOTS T0 A'XLES IN GUNS.

( Application filed Jan. 8, 1902.

UNITED STATES PATENT O F CE.

GUSTAV EHRHARDT, OF EISENAGH, GERMANY.

MEANS FOR SECURING CENTERPIVOTS TO AXLE S IN GUNS.

SPECIFICATION forming part of Letters Patent N 0. 700,633, dated May 20, 1902.

Application filed January 8, 1902. Serial No. 88,914. (No model.)

T0 at whom it may concern.-

Be it known that I, GUSTAV EHRHARDT, engineer, a citizen of the United States, residing at Eisenach, in the Grand Duchy of Saxe-Weimar, German Empire, have invented certain new and useful Improvements in Means for Securing Center Pivots to Axles in Guns, of which the following is a specification.

My invention relates to a means forsecuring the center pivot in guns. As compared with an arrangement hitherto known,in which the center pivot is secured by means of balls which at the same time serve as bearing-balls, the present arrangement possesses the advantage that the strong upward thrust arising while the gun is traveling is safely taken up by a large flat surface.

The invention is illustrated in the annexed drawings, wherein I Figure 1 shows a lateral elevation in section of a gun with the center-pivot-securing arrangement. Fig. 2 is a longitudinal section through the center pivot bearing or socket. Fig. 3 is a cross-section through the same, and Fig. 4 a securing-segment in plan and cross-section.

The pivot Ct is provided with a peripheral groove,which,as illustrated in the accompany: ing drawings, is of rectangular section b. The pivot-bearing c has a similar groove (see Fig. 2) at the same level. side of the bearing is provided with an inter nally-screw-threaded hole 6. This hole is closed by the plug f,- screwed into it, and serves for the introduction of the various segments g into the recess-formed by the two grooves, one half of each segment being contained in the groove in the socket and the other half in that of the center pivot. introduced into the hole one by one. Hence the diameter of the hole must correspond to the size of one segment. Thesegments when all are inserted form acomplete'ring, as shown in Fig. 3, so that after the hole 6 has been closed by the plug f the pivot cannot be lifted out of its socket. In the drawings the segments' are shown of rectangular section. On

their outer surface facing away from the center pivot each segment has an internally- At a suitable point the The segments are screw-threaded hole h, Fig. 4:, to facilitate its removal from the bearing. Instead of the segments cubical or rectangular blocks might be employed.

If a ball-bearing is employed, on account 01": the violent jerks or concussions in traveling the balls would be likely to get flattened and would jam when the upper gun-carriage is turned. By securing the center pivot in the manner described the upper gun-carriage slides with its bearing-surface t' on the slideface j, and the surfaces of the segments which have to bear the strain of the concussion in traveling are not utilized as bearing-surfaces, while at the same time the complete ring formed by the segments replaces the portion of the bearing-surface lost on account of the recess. Owing to the flat pressure -surface thus created the segmental ring can safely take up the thrusts of jolts Without any risk of damage to the faces of the ring and pivot taking up the strain.

Having now particularly described and as certained the nature of my said invention and in'what' manner the same is to be performed, I declare that what I claim is- 1. Means for securing the center pivot of guns consisting of a ring formed of separable segments seated in a space formed by grooves in the center pivot and pivot-bearing, substantially as described.

2. Means for securing the center pivot of guns consisting of a center pivot provided with a peripheral groove, a pivot-bearing having a groove opposite the peripheral groove, and a ring formed of separable segments seated in the spaceformed by said grooves, substantially as described.

3. In a pivot-bearing for guns, a pivot having a peripheral groove, a pivot-bearing having a groove opposite said peripheral groove and an orifice in thepivot-bearing for admitting segments into the space formed by said grooves, for forming a segmental ring therein, substantially as described.

4. A pivot-bearing for guns.comp'rising a pivot provided with a peripheral groove, a pivot-bearing provided with'a groove opposite said peripheral groove, an opening in the I11 testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

' GUSTAV EHRI-IARDT. Witnesses:

ERNST HAMMLER, G. JOHANNES REUTEB.