US951013A - Tool-holder for pneumatic hammers. - Google Patents

Description

V. E. LANE. TOOL HOLDER. FOR PNEUMATIC BANNERS APPLICATION TILED MAB-10,1909.

Patented Mar. 1,1910.

INVENTOR "1/111?!" 15- Lan a stem 5 extending into the-barrel 3.

VICTOR EDWARD LANE, OF BERWICK, PENNSYLVANIA;

TOOL-HOLDER FOR PNEUMATIC' HAMMERS.

Specification of Letters Patent. Patented M 'ari 1, 1910;

Application filed March 10, 1909. Serial No. 482.549.

To all whom it may concern:

Be it known that I, VICTOR EDWARD LANE, a citizen of the United States, and a resident of Berwick, in the county of Columbia and State of Pennsylvania, have invented a new and Improved Tool-Holder for Pneumatic Hann'ners, of which the following is a full, clear, and exact description.

My invention relates to tool holders for pneumatic hammers, my more particular purpose being to provide a construction adapted to retain the tool in proper working relation to the hammer, allowing the tool" all necessary freedom and effectively preventing the tool from being unexpectedly ejected from the hammer so as to cause an accident.

More particularly stated, my invention comprehends a hammer barrel to which is operatively connected a rivet set or tool. by aid of appropriate connections which allow the rivet set or tool to be readily removed, when desired, from the barrel, but prevent such removal occurring accidentally.

Reference is to be had to the accompanying drawings forming a part of this specification, i'n which similar characters of reference indicate correspondingparts in both the. figures.

Figure 1 a side view, partly in elevation and partly, in section, showing part of a hammer barrel and a rivet set extending partly into said barrel and provided with a neclr. this view flll'tlltllfillOW111g pins which extend radially inward toward said neck, and a band encircling the pins to prevent their unauthorized removal; and Fig.2 is a vertical central section upon the line 2+1- ol: Fig. 1, looking in the direction of the arrow, and showing the neck of the tool, and further showing the pins for preventing the removal ot the tool from the barrel, this view further showing how the band is fitted upon the bar reel in order to hold the pins in position.

At 3 is a cylindrical barrel forming part of a pneumatic hammer.

At 4 is u rivet set which is provided with This stem is provided with a neck 6 of reduced diameter.

At 7, 8 are pins which'are provided with heads 10, the heads being sunken slightly into the barrel 3.

At 11 is a band consisting of a strip of -posit ion.

sheet sprin metal bentsubstantially into the form o a circle. One end of the strip is shown at 12 and is'bent slightly inward,

enterin a' notch 13. The opposite end 14' of the and slightly overlaps this-notch 13. The band 11 as a whole is sunken slightly into the barrel 3, so that the outer surface of the band is substantially flush with the outer surface of the barrel. "The band cugages directly the heads 9, 10 of the pins 7. 8 and normally prevents the removal of these pins. Except for the band, however, the pins may be easily removed and the rivet set thereupon released from the barrel. The pins 7, 8 are provided with annular bevels 1.5, 16, and the stem 5 is provided with beveledshoulders 17 18, 19 of annular form.

My invention is used as follows: In order to assemblethe parts, the stem 5 of the rivet. set is extended a little way into the end of the barrel. The pins 7, 8 are neirt placed; in position so that the points of these pins loosely engage, or at least closely approach in position, the outer surface of theneck (3. The band 11 is next placed in position, the portion 12 being slipped into the notch 13 and the end 1% beingbrought partially over the notch 13. The band being made of spring material clings upon the barrel 3 and causes no inconvenience in handling the hanin'ier. The rivet set 1 is now free to play in the general direction of its axis and when actuated in the usual manner is capable of: conferring its power upon the rivet or other object to be driven. In order to remove the rivet set. the operator (using an implement for the purpose, if he so desires) raises the ends 11 of the band 11 and slips this band 01f, prying the inturned portion 12 out from the notch 13. The pins T, 8 are next removed, which is easily done as they merely fitneatly in The rivet set is nowfree and can be taken out. If. desired, however, the rivet set can be removed from the hammer barrel much more quickly than in the manner above described. The operator, by grasping the rivet set and givmg it a quick jerk, can extricate it from the barrel. This is because the bevel 17 rides upon the bevels 15, 16, forcing the pins 7, 8 outwardly so that the rivet set becomes disengaged. In order to replace the rivet set, it is pushed quickly into the barrel so that the annular shoulder 18, being beveled as shown and lodging a ainst the annular bevels 15, 16, on the pins 8, forces these pins apart. In

either taking the rivet set out or putting it back in this manner, the band 11 springs outwardly a little.

While my intention is to prevent the rivet set from being forcibly ejected by any accidental means, I do not intend to prevent it from being removed-quickly and at will by the operator, and that, too, without the ne- 5 cessity for taking off the band 11 or removing the pins. i

In the construction above described the rivetfset is normally held in. its working position and is prevented from falling out, in

case the barrel of the hammer is pointed 1 downwardly and the rivet set happens not readily occur. It, the hammer unexpectedly makes a stroke, the rivetset is driven for- Ward 21- measured distance, just as it would be in striking the working blow, and is stopped by the pins 7, 8. While forcon- As is well known by persons accustomed to handle pneumatic hammers. there is danger of the rivet set. being thrown violently from the barrel, as, for instance, by some unaupneumatic hammer, or from some accidental disturbance of the trigger or parts afleeled by the latter. .In fact, itis nothing unusual for the rivet set to be eiected so violenily that it acts like a projectile and would prob-- venience I have described the member 4 as a rivet set, it will be understood that I do not limitinyself thereby, as many other tools are well known in this art as equivalents for a rivet set of the type shown. Neither do 1 limit myself to the particular form of the band 11. This band is for some purposes essentially a clip, and it is obvious that clips of other forms may be en'iployed in the rela tion above described.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

The combination of a barrel provided eX- ternally with a notch, a clip made of spring metal and provided with an inturned portion extending into said notch, said clip having generally a circular form and extending substantially around said barrel. a pin extending radially through said barrel and held in position by said clip, and a. rivet set 1 provided with a. stem extendinginto said thorlzed person pulling the trigger of the 5 barrel, said stem being provided with a redue-ed portion disposed adjacent to said pin.

ably kill a person should it happen to strike l him in a vital part. By aid of my inver tion, however, such an accident can not l n testimony whereof I have signed my name to this specification in the presence of two suhseribing witnesses.

Vl GTOR El) W A RD TJ1\ N E.

i tnesses Mnzmr: l'VAnnioJ-L Pam-1N T. Gnoir.

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