US904692A

US904692A - Stone-working tool.

Info

Publication number: US904692A
Application number: US40835607A
Authority: US
Inventors: Louis W Greve; Charles B Richards
Original assignee: Cleveland Pneumatic Tool Co
Current assignee: Cleveland Pneumatic Tool Co
Priority date: 1907-12-28
Filing date: 1907-12-28
Publication date: 1908-11-24
Anticipated expiration: 1925-11-24

Description

L. W. GREVB C. B. RICHARDS STONEWORKIHG TOOL,

APPLIOATIOH FILED DEO.28,1907.

Patented Nov. 24:, 1908.

WITNESSES:

LOUIS W. GREVE n Li Y D l .7 commit",

p eciliea'tion of Letters Patent.

' LYING TOOL.

it OFFICE.

OF CLEVELAND, OHIO, A CORPORATION OF Patented. Nov. 24, 1908 Application :zlez't December 23, 1907. Serial No. 408,363

lie it known that We. Q

.1, county of n have inventg is a sptwilh iinoiple of the in'ventutwine wined and he 1, i ,1 A .\r

i re I reinowor end ot a A must. tool and a 'ii-oit in the lower end of the s and. provided with our improvement tit axial seci neninatio inr .L showing; another vilt H 'ial passage in tool or plug my; out the nghylinder of en 3s the reterence ortion ot the pisproveinonts in men the tollow- This casing is formed With two annular i GKEVE and grooves, l] in its interior bore winch rooves a w 1 I i, 7 a

the United are separated by a central annular rib, 12, which rib has a greater interior diameter than the exterior diameter of the enlarged portion of the drill-bit. An annular chamher is thus formed around the enlarged portion of the drill-bit and Within the surrounding casing. An inlet-opening, 13, is formed in the side of the casing and through the annular rib. Gaskets, 14, which are folded double so as to he U-shaped in cross-section are placed within the annular grooves 11, so as to form packings tor the annular chamber with. the flanges pointing inward, so as to be tightened by internal pressure in the chamber.

in the form illustrated in Fig. I, the Gas ing is separate from the tool-nose and is fitted around the enlarged portion of the drill-hit and is formed with an internally threaded nipple, 15, into which the threaded ipple upon the end of a water-hose may be screwed In the tor-1nillustrated in Fig. I, the inlet of the casing is connected to the Water supply through the flexible hosescrewed into the nipple and the entire tool and bit may be rotated without affecting the hose, inasmuch as the drill-bit is free to rotate Within the casing, thus preventing obstruction to rotation by the hose.

In the form illustrated in Fig. II of the drawings, the casing 9 is integral Wi h the tool-nose 3 and the lnnnmer-cylinderiis extended down around the casinq. A' tvaterchannel, 16, extends from the upper ml of the cylinder, down through the side f the same and into the extension, and ope into the annular rib 12 to communicate w th the inlet-opening 13, formed between th annular grooves 11 having the gask ts 14. All of these parts are identical in construction and function with the corresponding parts of the tool illustrated in Fig. I, indicated by same numerals without the qualifying letter a.

In the form illustrated in F ig. II, the water-hose conneeted to the Water-channel at the super end of the hammer cylinder,

o'- g which isintegral with the cylinder is rotated or oscillated in with entire toot. i

Other modes of applying the principle of our invention may be employed for the mode herein explained. Change may therefore be made as regards the mechanism thus disclosed, provided the principles of construction set forth respectively in the following claims are employed.

We therefore particularly point out and water-passage and a passage radiating from the upper end of said axial passage out through the side of the drill-bit, of a casing surrounding the drill-bit and formed with two annular grooves and a central annular rib of greater internal diameter than the diameter of the drill-bit, and with a waterinlet through said rib and registering with the radial passage, and gaskets U-shaped in cross-section and located in the annular grooves with their flanges pointing inward.

2. The combination with a pneumatic hammer and a drill-bit inserted in the tool nose of said hammer and formed with an enlargement immediately adjoining the shank and an annular shoulder at the lower portion of the enlargement and formed with an axial waterpassage and with a radial water-passage extending from the upper end of the axial passage out through the middle of the enlargement, of a'casing surrounding the enlargement and formed with two anannular grooves with their flanges pointing inward 3. The combination with a pneuniati hammer and a drill-bit formed with an enlargement adjoining the shank and with an annular rib the lower end of the enlargement, of a casing surrounding the eniargement to allow the drill-bit to he rotated within it and formed with two interior annular grooves and with an annular rih between said grooves and of greater internal diameter than the external diameter of the enlargement and with. a lateral nipple having a water-passage to the interior of the casing through the annular rib to which nipple a water-hose may be connected, and gaskets in the grooves of the casing Ushaped in cross-section and having their flanges pointing inward.

In testimony that we claim. the foregoing to be our invention We have hereunto set our hands this 2nd day of December A. D. 1907.

Witnesses T W -T A 9,?- LJGlYJJLLLii; W a

o, i riaLL.