US873625A - Magazine screw-driver. - Google Patents

Description

-No. 873,625V PATENTED DECflO, 1907.

L. S. STARRETT.

MAGAZINE SGREW DRIVER. APPLIGATION FILED D110, z8'. 190s.

l Y, PATENT ()FFICE `LAECY S. sTAERETT, CF'ATHCL, MASSACHUSETTS, ASSICNCE To TEE L..S. STAREETT Co., or

ATEoL, MASSACHUSETTS, A CORPORATION or MASSACHUSETTS. l

MAGAZINE l SCREW-DRIVER.

`speeificatnpr of Letters Patent.

,- Patented Dec. 1o, 1907.

Appliotionaia December 28, 190s. serialnassos.

To all 'whom 'it may concern.' A

B e it known that I, LARoY S. STARRETT, of Athol, '1n the county or vv orcester and State of Massachusetts, have 4invented certain new and useful Improvements in Magazine Screw- Drivers, of which the following is a specification.

This invention relates to a magazine Screwdriver having a hollow, two-part handle, iny 'in use. The friction may be increased if de-l sired by s reading the prongs slightly.

In the rawing Figure 1 is'a side elevation ofthe tool complete. Fig. 2 is a'longitudinal section on line 2 2 of Fig. 1. Fig. 3 is a plan of one of the blades, Fig. 4 an end view ofthe end plug and blade socket, Fig. 5 a transverse section on line 5 5 of Fig. 2 and Fig. 6 a partial longitudinal section on line 6 6 of Fi 2.

The tool handle is composed of the hov low steel body 10 and cap 11 frictionally united centrally to telescope toa deiinedlimit, and having a positive engagement for turning together when in use. For this purpose the inner end of the body has a series of (preferably) four longitudinal slots, 12 wlule the corresponding end of the caphas a single short internal stud 13 headed or-grooved peripherally to snugly enter any one of the slots 12 between a jacent prongs of the bod 10. These prongs are terminally beveled to cilitate applying the caps. The strains of use do not tend to disengage the parts 10 and 11 which are milled or knurled peripherally to facilitate their use. i l f The forward end of the body -has fixed within it a tul ilar end-plu 14 and an'inclosed longitudinally slotted b ade socket 15,v these .two parts being forced together and subsequently perforated transversely at a right angle to the plane of the blade slot as zit-16, Fi 2, to receive the reciprocating bladeho ding pin or plunger 17 to bedescribed. Parts 14 and `1 5 are also forced into body 10 and secured-by rivet 18 -in position flush with saidend.' p

The blades 19 are of peculiar construction andare held in the blade socket and released therefrom by a locking device which is a special feature of my invention but is not herein Claimed. The blade butts are of uniform thickness to fit between the walls 'of the blade socket 15 and of a width to bear with their rounded edges. against the inner walls of the tubular end plu 14. Each blade has at its inner end a pec' 'ar recess as shown at 20 in Fig. 3,-at irst narrow with parallel *form with the prongs terminally beveled to readily enter the slot in blade socket 15. This construction adapts the Several blades to be received, held in place and released by .the transverse reciprocaton of the pin or lplunger 17, best shown-'in-Fig..2. It has a 'mited endwise movement within the'perforation 16 in the end plug and blade socket, such. perforation extending, of reduced size, through one wall only of the forward end portion of the hollow body 10, see Fig. 2,

wherenthe reduced tip of the plunger normally protrudes, due to the pressureof a coiled spring 21 in'an axial cavity 1n the walls, then somewhat Wider and of circular other end of the plunger. This normal spring pressure is overcome bya thumb pressure when the operator desires to insert or remove one 'of the blades. iThis improved locking device is more fully illustrated and described, 'and is specifically claimed, in my application,'Serial No. 392,318, for patent on blade fastener for tool handles, filed Sept. 1 1, 1907-,.as a division of this case.

" The dormant blades are frictionally held from rattling Within the handle, and from dropping out when the capis' removed,` by

means of a sheet steel spring 22 secured at' its outer end by a rivet 23 to the inner face of one of the prongs of the bodyr 10; p This s ring is so bent,.intermediately, as to press tiie inclosed blades against the opposite 1nner wall of the body and hold them removably andl interchangeably. rIhe body has capacity for four blades, with an addltional one in'position for use in the blade socket,

and the ti s may vary froml the full width of A' gown to one a sixteenth inch Wide,

the butts withwhich, as a brad awl or reamer, a hole may be bored through a one inch pine board turn together,

thebla'de in use,

. H I l Ain a few seconds. The whole device is very compact and convenient. I claim as my invention: y

1. In `magazine tool handles, the hollow body and its cap telescoping frictionally at the middle and there engagin -positively to a series of b ades inclosed therein and spring held to prevent rattling or falling out, t e body having a terminal plug permanentlysecured in it with a socket iitting, all blades of the series, for the purpose set forth.

2. The two part hollow handle for screw drivers and like tools, comprisin the body having at one end a fixed termina socket for internal space for the dormant blades and, at its other end, a plurality of longitudinal slots, in combination with the cap iitting--frictionally over the slotted end to telescope the body, and provided with an internal projection adapted vto engage in any one of said slots to insure the parts turning substantially as set forth.

together driver, a two-pant 3. In a magazine screw hollow handle, comprising a portionjfrictionally united andengaging positively to turn together, such body having a terminal lug and blade-socket permanently secured t ere-to, in combination with a se'- ries of blades therein having uniform flat Shanks,

body and a capy and afbent sheet metal spring secured within the handle and bearing laterally on said Shanks, substantially as set forth.

vIn testimony whereof I have affixed my signature, in presence of two Witnesses.

LAROY S. STARRETT.. g Witnesses: `FLORENCE E.. Boron, FRANK E. WING.

Images