US305035A

US305035A - lytle

Info

Publication number: US305035A
Authority: US
Publication date: 1884-09-09
Anticipated expiration: 1901-09-09

Description

Patented Sept. 9, 1884.

III/

L/ l r 5 A. E. LYTLE..

EXPANDING WRENCH AND MANDEEL.

(No Model.)

UNITED, STA -es OFFICE.

' ALBERT E. LYTTIE, or CHICAGO, ILLINOIS, ASSIGSOR- or TWO-THIRDS TO JOHXlL-N'ANHOUSEX, BEACH 'r. vaxnonsnx, AND GEORGE H. EATON,

To all whom it may concern' work.

i ALL or sun: PLACE- t I EXPANDING WRENCH AND MANDRELQ SPECIFICATION forming part of Letters Patent No. 305,035, dated September 9, 1884.

' v Application filed December 13(1893. (X0 model.) I I Be it known that I, ALBERT 1-3. LYTLE, a citizenof the United States, residing at Chicago in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Erpanding \Vrenchcs and Mandrels, of which the following is a specification, to wit:

This invention relates to an improvement in inside wrenches and mandrels; and it consists in the peculiar construction and arrangement of the same, whereby a series of dogs having corrugated faces are expanded evenly in all directions to hold the work, substan" tially as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which lnyinvention appertaius to makel and use the same, I will now proceed to del scribe its construction and operation. referringtotheaccompanying drawings, in which- I Figure 1 is a longitudinal section of my mandrel; Fig. 2, atransverse section of the same; Fig. 3, a side view of my wrench, and Fig. 4 a longitudinal section, and Fig. 5, a transverse section of the same, showing it clutching a bung-bushing.

A represents a steel shell or cylinder formed & hollow, as shown, and having one end open and the other closed, and provided with a screw-threaded hole, a, as seen in Figs. 1 and 4. The shell A is'formed with any suitable number-of slots, a, extending through its sides longitudinally for a suitable distance, in each of which is placed a dog, B, having acorrugated face, 11, and its rear or inner side formed. on an incline. or wedge-shaped, as at 6'. These dogs are prevented from passing entirely through the shell by a small projecting flange, b, at each end, which lies in a slot, (1, in the shell at the ends of the dog.

0 represents a plug, circular in cross-section, and tapering for a suitable distance upon the same angle given to the adjacent faces of the dogs. This plug or expander is provided with a sciew-thrcadcd point, 0, which passes through the threaded hole u in the end of the shell. The dogs having been placed in position and the plug or expander inserted, it is only necessary to screw it in to expand the dogs cquallyin all directions, and thus accommodate themselves to various sizes of In the form shown in Fig. 1 this device is especially valuable in lathe work, as it can be placed in the lathe and the cylinder to be turned clamped firmly and properly centered at the same time, thus saving much time and wogk over the ordinary method of fitting a plug into the cylinder, and then centering it for attachment to the lathe. The mandrel is usually" long enough to extend entirely through the object to be turned, and may then be clamped between the centeis of the lathe and revolved by means of a lathedog, as usual with similar-shaped tools; or it may be clamped at one end in a chuck, such as ordinarily used in lathes. The smaller form shown in Fig. 4 can be used to great advantage as an inside wrench, and is especially adapted to inserting and removing the bushiugs from barrels.

It is obvious that the device may be made of any desired size for coarse or delicate work. Ihe plug or expander is formed on one end with an angular portion for the attachmentof a wrench, or a hole for using a spanner, and the shell may also be so formed, if desired, in order that one may be firmly held while the other is turned.

I am aware that it is not new, broadly, to

construct a mandrel or wrench with expanding dogs. and do not desire to be understood as claiming such as my invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, isg In an expanding wrench or mandreha shell or cylinder formed with longitudinal slots or openings in its sides hlwiug recesses at their ends, and a screw-threaded hole through the end of the shell, in combination with a series of dogs serrated upon their outer and inclined upon their inner faces, and having projecting flanges on their ends, and a tapering screwthreaded plug or expander adapted to expand the dogs equally as it is passed into the shell, substantially as and for the purpose set forth.

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

W. (J. MCARTHUR, (LS. Hannrsorw