US1701771A - Jack di stefano - Google Patents

Description

Feb. 12, 1929. 1,701,771

1., Dl STEFANO,

ICE PICK Filed. Oct. 1l, 1926 I N VEN TOR ATTORNEY Patented Feb. 12, 1929.

UNITED STATES JACK DI STEFANO, F KANSAS CITY, MISSOURI.

ICE PICK.

Applicationled October 11, 1926.

My invention relates to hand tools and particularly to picks having retreating point elements. M object is to provide a tool having improvec factors of safety and convenience especially for non-use periods. More specifically, my device comprises an ice pick in which the shank and point rest normally Wholly within the handle and are projected to operative position by manual means, are secured in such operative position by improved details of structure, and When released therefrom by means provided return automatically to rest Within the handle.

In accomplishing my object I provide the improved details of structure and combination illustrated in thedrawings, invvhich:

Fig. 1 is an exterior vieW of the pick in operative position. j

Fig. 2 is a. longitudinal sectional view ofthe pick in operative position.

Fig. 3 isa longitudinal sectional View of the pick in released, that` is, non-operative position.

Fig. 4 is an exterior vienT of the pick in non-use position.

Fig. 5 represents detail perspective vieul of the head member of the point element and its operating means shown in spaced relation.

Referring in detail to the drawings:

1 designates a barrel which is the handle of the device, the barrel having a Wall 2 and channel 3, the cap 4 engaging the Wall and (.:losing the channel at one end of the barrel while the Wall and channel taper at the other end to reduced diameter forming an opening 5. 'lhe barrel has a. longitudinal slot (i expanding into a socket 7 and an aperture 8 opposite the socket, and shoulders on the interior surfaces of its base at 9, for purposes to be described.

A cylindrical head or plunger 10 is slidably mounted in the channel 2 of barrel 1, the head carrying point element 11V Which is attached to it by threads 12 and set screw 13, being thus removable for replacement. The point element is adapted to move through the opening 5 of the barrel 1, to exposed or operative, and concealed or non-use positions, as the head 10 is moved in one direction or oppositely and longitudinally of the barrel channel by means now to be described. The head 10 is drilled transversely to form chamber 1 4 and aperture 15 of less diameter than'the chamber, a spring seat 16 occuring as the result of the diierence in diameter of chamber and aperture.

Serial No. 140,794.

There is a key member 17 comprising a bar 18 oit length substantially equal to the diameter of the barrel, and button elements at each end of bar18 designated respectively as 19 vinteriorly and 2() exteriorly positioned in re lation to the barrel in 3, the button 20 constituting a knob. The key member 17 operates in the slot and in co-operation with the head 10. The bar 1S extends through the slot 6, and traverses the diameter oi the barrel at the same time being transversely movably engaged with the head 10 through positioning in axially mutual openings, namely, the chamber 14 and aperture 15, of said head 10. Button 19 of key 17, snugly movable in chamber 14, is tensioned outward ly against the Wall of the barrel by the expansion coil spring 21 based against the shoulder 16. The key member 17 so positioned and tensioned constitutes a latch for purposes to be described.

The point element having its head 10 slidably mounted in the channel 3 of barrel 1, is movably projected beyond the taper end of the barrel, and retracted, by the movement of the key 1 7 along the barrel 1 and slot 6. Means are provided for anchoring the point element in projected position by a latch as follows: The knob 20 of key member 17 is provided With a portion 22 constituting a shoulder' of smaller diameter than the body ot knob 20, but still of sutlicient area to serve asthe exterior adjacent element ot the knob 20 in its path along the barrel while guidingthe key .17, shouhler 22 being adapted to seat within enlarged portion or socket 7 olg slot Vvvhen the key member 17, projecting the point element 11, hasv reached the socket 7, the shoulder slips into said socket, the admission being permitted by the transverse extension of the key member 17 under the influence ot spring 21 through the aperture S. The resulting engagement of button 19 in aperture 8 and of shoulder 22 in socket 7, secures the point element 11 in'iiunctional position.

Spring clip 23 is provided having plug 24 adapted to loosely engage in aperture 8 and ,close the same, key member' 17 pressing the spring clip outward as the button 19 is projected under the influence of the spring. lVhen it is desired to release the point element 4from functional position, pressure on the spring clip 23 carries the plug 24 to force the Vprotruding portions of said key member into the chamber 21, and the shoulder 22 to the exterior of the barrel, thus disengaging the latch-ing mechanisi-n and permitting the key member to travel through the barrel and in the slot, carrying with it the point element to retracted and nonuse position. pansion spring 25 is provided, assembled in teriorly of the barrel and annularly of point element ll, seated on shoulders 9 of the interior of the body Wall near the taper point, and directed against the head l@ of `the point element. The trianipnlatio-n ot key member lf? pro ,cting the point yelement compresses the sprlv the operation of the latching factors ding the point element in pro-- jected position, which vthe i-inetioning position, and the spring .being locked in compression. 1When the point elen'ient is to be restored to the barrel, the nnlatching of hey member 17 'trom engagement with the sock-ets ot .the bar-rel Wall rby the pressure on clip plug 24, permits the compressed spring to function, ywhich thereupon retracts the point'elenlent along thefi'nterior of the barrel to non-use or rest position. Y

That I claim and desire to secure by Letters Patent is:

l. In an ice piel, a tube-like hand-le'having a longitudinal slot, a point element having a cylindricall and enlarged head portion slidably mounted Within the handle, a key member engaging the cylindrical head and 'traveling in the slot and having a knob positioned on the exterior of the handle,means for locking the key member with the handle to detain An ex- K the point element in projected position, and means ii-or releasing the point element from detention including an element fixed to the handle having a key-engaging member.

Q, An ice pick comprising a hollow-handle and a detachable point element having a head mounted Within the handle and movable longitudinally thereof, thehandle having a slot and aplurality ol socket-aa key member engaging the head and having a button 'exterior of the le ndle Land travel in the slot, a spring retiacti-fng the vpoi-nt element into the handle, thekey ipulatable to project the point element agai est the intl e Yoi the spring, latch means carried by the key member to enga te a 'olet in the handle, and resi t `meal ,i V d tothe handle adapted to move the key i mber troni such engagement.

23. In a retrzitct-ile tool device, a hollow handle having a longitudinal slot and an opening oppositethe slot, a tool slid'ahle in the handle, ,a spring bearing against the handle for retracting the tool, a bar moving in the slot and tranversely movable in the tool tor moving the tool, a spring in the tool urging the bar to enter the opening to latch the tool in extended position, and a clip ixed on the handle having a lug Vadapted tor enter Vsaid opening to move the bar out of latchng JACK DI STEFANO.

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