US1646120A

US1646120A - Tool retainer for pneumatic hammers

Info

Publication number: US1646120A
Application number: US170001A
Authority: US
Inventors: Strunack Michael
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-02-21
Filing date: 1927-02-21
Publication date: 1927-10-18
Anticipated expiration: 1944-10-18

Description

Oct. 1

927 M. STRUNACK 7 Tech RETAINER FOR PNEUMATIC HAMMERS Filed Feb. 21, 1927 Inventor 71722770605 [770/064 By @009 Aztorngy Patented Oct. 18, 1927.

MICHAEL STRUNACK, OF POTTSTOWN, PENNSYLVANIA.

TOOL RETAINER FOR LPNEUMATIC HAMMERS.

Application filed February 21, 1927.

The present invention relates to a tool retainer for pneumatic hammers to prevent the ejection of the tool from the hammer when the same is not in use.

Another important object of the invention resides in the provision of a tool retainer of this nature which may be maintained in an operative position at all times during the operation of the pneumatic hammer.

Another very important object of the invention resides in the provision of a tool retainer of this nature that is light in its construction, easy to handle and one which may be 'readily and quickly engaged. with and disengaged from the pneumatic hammer.

A still further very important object of the invention resides in the provision of a tool retainer of this nature which is evceedingly simple in its construction, inexpensive to manufacture, strong and durable, thoroughly eliicient and reliable in use. and otherwise well adapted to the purpose for which it is designed.

'ith the above and numerous other objects in view as will appear as the d cscrip tion proceeds, the invention res des tll certain novel features of construction. and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing Figure 1. is a side elevation of the tool retainer and tool embodying the features of my invention, I

Figure 2 is an edge elevation thereof.

Referring to the drawing in detail. it will be seen that the device embodies an QlOI1- gated framedike structure including sides 5 disposed in spaced parallelism and being offset at intervals as is indicated at 6 and T to accommodate the difference in diameter of the pneumatic hammer P which is of cow ventional construction. The side members 5 at one end merge into a transverse member 8 along one edge of which is formed an outwardly curved flan e 9. The portions of the side members 5 adjacent offsets 7 are provided with projections 10. The other ends of the side members 5 merge into a transversely extending ring 11 through which the tool 12 projects. This tool 12 is formed with an annular flange l3, and a compress ible coil spring l l is disposed about the tool to impinge against the ring 11 and the flange 13 for holding the shank 15 of the tool in Serial No. 170,001.

the pneumatic hammer in the desired manner. A split ring 16 extends transversely of the frame structure and is attached adjacent its ends to intermediate portions of the side members 5 as at 17 by rivets or in any other suitable manner adjacent offsets 6. One end of the split ring or band 16 has a headed pin or like fastening element 18 engaged therewith for attaching one end of a coil spring it), said end being in the form of a loop 20 which may be easily engaged over or disengaged from the fastening element lb. The other end of the spring 19 terminates in a loop 22 for receiving a cotter pin or like fastening element which pierces looped entensions 24 on the other end of the band 16.

From the above detailed description it will be seen that the coil spring 14 is first placed on the tool 12 and then the tool is projected through the ring 11. The shank 15 of the tool .12 may now be inserted in the pneumatic hammer and the end member 8 slipped over the end of the pneumatic hammer adjacent the handle so that the band 16 is snapped partially about the intermediate portion of the pneumatic hammer and when in this position the end 20 of the spring 19 may be engaged over the fastening element 18 to tension the spring 19 to some extent for holding the frame on the pneumatic hammer against accidental displacement. The projections 10 form linger grips for slipping the frame on and off the pneumatic hammer and the flange 9 is particularly adapted for pulling the frame off of the pneumatic hammer as will be quite apparent. 'hen this retainer is in place it will be seen that the tool 12 is free to reciprocate in the desired manner owing to the yielding qualities of the spring 14 but the tool is prevented from being displaced from the pneumatic hammer until the retainer frame is removed. thereby preventing the munerous accidents which so frequently occur because of the flying of the tool from its hammer when the air is turned on accidentally or when the hammer slips or otherwise nus-managed.

It is thought that the construction, utility, and advantages of this invention Will now be quite apparent to those skilled in this art and accustomed to use the pneumatic ham mcr. The present embodiment of the invention has been disclosed in detail merely by way of example since in actual practice it attains the features of advantage enumer ated as desirable in the statement of the invention and the above description.

It is apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is 1. A tool retainer for a pneumatic hammer comprising an elongated frame structure one end of which is in the form of a ring through which the tool is adapted to project while the other end is adapted to be disposed over the handle end of the hammer, a split band fixed adjacent its ends to intermediate portions of the sides of the frame, a spring fixed at one end to one end of the band and having a detachable engagement with the other end of said band so as to hold the frame structure against displacement from the hammer.

2. A tool retainer for a pneumatic hammer comprising an elongated frame structure one end of which is in the form of a ring through which the tool is adapted to project while the other end is adapted to be disposed over the handle end of the hammer, a split band fixed adjacent its ends to intermediate portions of the sides of the frame, a spring fixed at one end to one end of the band and having a detachable engagement with the other end of said band so as to hold the frame structure against displacement from the hammer.

3. A tool retainer for a pneumatic hammer comprising an elongated frame structure one end of which is in the form of a ring through which the tool is adapted to project while the other end is adapted to be disposed over the handle end of the harnmer, a split band fixed adjacent its ends to intermediate portions of the sides of the frame, a spring fixed at one end to one end of the band and having a detachable engagement with the other end of said band so as to hold the frame structure against displace ment from the hammer, a flange formed on the edge of the end of the frame adapted to engage over the handle end of the hammer.

4. A tool retainer for a pneumatic hammer comprising an elongated frame structure one end of which is in the form of a ring through which the tool adapted to project while the other end is adapted to be disposed over the handle end of the hammer, a split band fixed adjacent its ends to intermediate portions of the sides of the frame, a spring fixed at one end to one end of the band and having a detachable engagement with the other end of said band so as to hold the frame structure against displacement from the hammer, a flange formed on the edge of the end of the frame adapted to engage over the handle end of the hammer, the sides of the frame provided with projections adjacent the last-mentioned ends.

5. A tool retainer of the class described, comprising a frame structure formed by a pair of longitudinally extending side members disposed in spaced parallelism and con nected at one end by a transverse ring and at the other end by a transverse bar, a split band fixed adjacent its ends to intermediate portions of the side members, a spring attached to one end of the band, means for detachably engaging the other end of the spring with the other end of the band so to hold the frame structure against displacement from the hammer.

In testimony whereof I atfix my signature.

MICHAEL STRUNACK.