US2411733A

US2411733A - Tubing expanding tool

Info

Publication number: US2411733A
Application number: US538126A
Authority: US
Inventors: Henry C Kemmerlin
Original assignee: Henry C Kemmerlin
Priority date: 1944-05-31
Filing date: 1944-05-31
Publication date: 1946-11-26
Anticipated expiration: 1963-11-26

Description

Nov. 26, 1946. H. c. KEMMERLIJN TUBING EXPANDING TOOL I Filed Ma 51, 1944 l|| 1| INVENTOR.

AT 'D R N EYB Patented Nov. 26, 1946 UNITED STATES PATENT i oFFicE" TUBING EXPANDING TOOL Henry C. Kemmerlin, Tryon, N. 0.

Application May 31, 1944, Serial No. 538,126

1 Claim.

The invention relates to a tool and more especially to an expandingtool for stretching or expanding purposes.

The primary object of the invention is the provision of a tool of this character, wherein the jaw ends of the same have fitted therein work applicators of special construction, so that the work can be properly engaged for the expanding or stretching of the latter, the tool being of forceps or plier type for hand operation thereof.

Another object of the invention is the provision of a tool of this character, wherein the same is designed for use in expanding tubing or a carrier therefor with the jaws of the said tool constructed so as to enter tubing or apertures in elastic material and be forced apart by pressure on the handles, thereby enlarging the size of the aperture and allowing a convenient connection with another tube or carrier.

A further object of the invention is the provision of a tool of this character, which is simple in construction, thoroughly reliable and efiicient in operation, strong, durable, readily and easily handled, the work applicators being removably fitted, and comparatively inexpensive to manufacture.

With these and other objects in view the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawing, which shows the preferred embodiment of the invention, and pointed out in the claim hereunto appended.

In the accompanying drawing:

Figure 1 is a side view of the tool constructed in accordance with the invention.

Figure 2 is a fragmentary end view of the same.

Figure 3 is a fragmentary inner face view of one of the jaws of the tool.

Figure 4 is a view similar to Figure 3 of the other jaw of the tool.

Figure 5 is a sectional view taken on the line 5--5 of Figure 3 looking in the direction of the arrows.

Figure 6 is a side view of the jaw for interfitting with the other jaw shown in Figure 5 of the tool. 1

Figure '7 is a sectional view taken on the line 1-1 of Figure 1' looking in the direction of the arrows. 7

Similar reference characters indicate corresponding parts throughout the several views in the drawing,

Referring to the drawing in detail, A designates generally the tool in its entirety as constructed 2 in accordance with the invention, and hereinafter set forth'in detail.

The tool A comprises a pair of levers l0 and l I, respectively, each having a handle end l2 which is of straight formation, and of required length. The levers l0 and II converge toward each other from the innermost portions of the handle ends l2, then are reversely angled thereto at the ends opposite and remote from the said handle ends I2, to provide outwardly divergent jaws l 3.

The lever l0 next to its jaw I 3'and partially extended into the latter has a bifurcation l4 longitudinally directed therein, while the lever H next to its jaw l3 and partially extended into the latter has in the outer faces recesses l5 providing a centered narrow elbow portion I6, which interfits the bifurcation M, the latter being also'reversely elbowed at 11 to the elbow portion [6. The elbowed portions l6 and I! are pivoted together by a pivot bolt l8 for swingingly connecting the levers with each other for the swinging of the jaws l3 toward and away from one another. This pivot bolt I8 is located at the crotch of the elbows l6 and I! of the levers Ill and II, respectively.

Formed in the tips of the jaws l3 are sockets [9 for reception of the studs 20 of the work appli- V caters 2|, these having outer half-rounded outer side faces 22 conforming to the inner diameter and shape of a tubing or apertures therefor, the studs 20 being removably secured in the sockets l9 by set screws 23 tapped in the sides of the jaws I3 at one side thereof.

The lever II has fitted thereto an adjustable stop screw 24 which is adapted to contact with the base of a socketed stop 25 formed in the other lever I0, so as to limit the throw of the said levers when pressed toward each other at the handle ends [2 thereof, so as to regulate the separation of the jaws l3 when manually operating the tool for expanding or stretching purposes in operating on a tubing or carrier therefor as before stated.

The spreading of the jaws I3 is had by separating the handle ends l3 in the manual operation of the tool as will be apparent, due to the connection of the levers l0 and II as has been set forth.

From the foregoing it is thought that the construction of the tool and its manner of operation will be clearly understood, and therefore a more extended explanation has been omitted.

What is claimed is:

A tool of the kind'described comprising a pair .of levers having handle ends of straight formation which converge toward each other from the 4 jaw 'ends of said levers, work applicators having studs, movably fitting the sockets in said levers, said work applicators having half rounded outer side faces formed thereon at a position off-center with relation to the studs, means for retaining said studs in said sockets and a limit screw fitting one of the levers and engaging the other lever for regulating the separation of the work applicators on actuating the levers.

HENRY C. KEMNIERLIN.