US1755269A

US1755269A - Tool holder

Info

Publication number: US1755269A
Application number: US271383A
Authority: US
Inventors: Gustav C Pearson
Original assignee: Gardner Denver Inc
Current assignee: Gardner Denver Inc
Priority date: 1928-04-19
Filing date: 1928-04-19
Publication date: 1930-04-22
Anticipated expiration: 1947-04-22

Description

Aprilzz, 1930. Y' G. C, PEARSON 1,755,269

rIOOL HOLDERv .Filed Aprm 19, 1928 2 sheets-sheet 2 CefJofo.

Patented pr. 272V-, 1930 Umfang@*staresfil GUSTAV cirnnason,v orynnnvnn, COLORADQQ'SSGQB, T Gannnnnfpnnvnneoiyi A PANY, or DENVER, COLORADO, A eoaroaarron oil-DELAWARE i Toor. nonnina@ 'l Y. Application led April 19,

The present invention relates to tool re-` tainers for rook drills and thetlike, the objeetbeing to provide a novel and simplek structure in which the .means for holding the retainer in its operative position and in its inoperative position-is simple, is very completely housed and adds practically nothing to the size of the structure'beyond that of the retainer y'mechanism proper.`

In the accompanying drawings:

- Figure 1 is a front elevation ofthe preferredrembodiment lof the invention. v

Figure 2 is asectional view on" the line 2-2 of Figure 1, and showing the tool retainer in its operative position.

Figure 3 is a view taken on the same plane vas Figure -1,but showing the retainer in itsl inoperative position.

Figure 4 is a `view in elevation of therock shaft'with theplunger therein.L

FigureV 5 is a detail perspective' view of said plunger. f n' Y Y v Y' y In the embodiment disclosed, Vthe holder for the tool is designated generally by the reference numeral 6 and is designed tok receive a steel 7 havinga eollar 8. The holder iny cludes a housing 9 having al transverse en` largement 10 at its front end provided with a bore 11. vIn this bore kis journaled, a rock shaft 12 having its ends'p'rojecting beyond Vthe enlargementlOand provided with' trans I stop lugs 9 V(The rock shaft 12 verse openings 13. A tool-retaining yoke lei is provided with-S-shaped side arms 15, the ends of which passv through the openings v13 of the shaft 12, andare pinned therein as indicated at 16. The portionsof the side .arms above the shaft 12 are adaptedr to abut against 17V formed upon the'opposite sides of the housing 9. v v

is provided Vcentrally with a transverse socket 18 opening through f one side and in said socket is a reciprocatory vplunger 19 chambered to receive a coiled spring 20 located in said socket and bearing against the bottom thereof and against 'the plunger to urge the same outwardly. A toggle link 21 is interposed between the plunger 19 and the adjacent wall of the bore11, said toggle link being provided with curved heads 192s. senat-No. arrasar' 22lovcated insockets-23 formed inn the plunger .i

1'9.and wall of the bore.

yThe arrangement is such that vwhen the'A yoke is in its operative position, as shown-in Figure 2, with its front portion in the path V'of the collar 8 Vof the drill steel 7, the toggle link .2l is in a position to' cause the spring tocurge said shaft in al directionto hold the yoke in saidoperative position.` To move the yoke to its inoperative position, itis only necessary 4to` swing Ythe .samey rearwardly, thereby turning the rock shaft until the tog'- gle link 21 has moved pastits dead center,

whereupon thespring willrreact andk hold said yoke in the'position shown in Figure 3. l i

From the foregoing, it is'v thought that the construction, operation and many advantages of the herein described invention will be ap-` parent to those skilled inthe art,rwithout' further desoriptiomand it will be understood.

that various changes in the size, shape, prOfportion andvminor details of construction may be resorted kto withoutfdeparting from the spirit or sacrificing any of the advantages f, of the invention; n

lVhat I claim, is:

plungerand against a fixed portion ,ofl theV tool holder.

2.l The combination with a tool'holder,ioff a tool -retainer comprising a rock shaft jourfA naled on the tool holder and a yoke having l. The combination with a tool holder, of K sidearms connected to the rockshaft`,ja yield- ,l

Ving plunger mounted in the rockshaft, anda toggle link having a bearing against the f plunger andragainst Aa portion of the tool holder. Y

3. The combination with4 atool holder. in-w oluding ahousing having a transversel bore, of a rock shaft j'ournaled in the bore and pro-V. jeeting fromthe opposite ends thereof, said 3 shaft having a `transverse socket between its ends-and within' thebore, a retaining yoke having lside armsmounted in the projecting ends of the shaft, a spring pressed plungerin the socket of the shaft, and aftoggle. link g lili.

bearing against the plunger and against the adjacent Wall of the bore.

4. The combination With a tool holder ineluding a housing having a transverse loore7 of a rock shaft jouinaled in the bore, a swinging tool retainer l'iXed' to the rock shaft and causing it to turn, said rock shaft having a transverse socket Within the loore7 a spring pressed plunger mounted t in the rock shaft, and a toggle link that extends into the Vsocket and bears against the 'plunger and against the' Wall of the bore, said toggle link having a swinging movement inthe shaft socket.

In testimony whereof, I affix mysignat-ure.

vGrUSTAV O. PEARSON..