US1516504A - Screw driver - Google Patents

Screw driver Download PDF

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Publication number
US1516504A
US1516504A US661312A US66131223A US1516504A US 1516504 A US1516504 A US 1516504A US 661312 A US661312 A US 661312A US 66131223 A US66131223 A US 66131223A US 1516504 A US1516504 A US 1516504A
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US
United States
Prior art keywords
blade
screw
driver
blades
screw driver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US661312A
Inventor
Schlager Matthaus
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US661312A priority Critical patent/US1516504A/en
Application granted granted Critical
Publication of US1516504A publication Critical patent/US1516504A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/02—Screwdrivers operated by rotating the handle

Definitions

  • This invention relates to imprm'ements in screw-drivers of the kind in which a screw- 1 driver blade is adapted to be inserted in a slot provided in a second scrmv-driver blade, so that the two blades cross each other preferably at a right angle.
  • the screw-driver blade adapted to be inserted in the slotted blade, is of a rhomboidal shape whereby, on fitting both blades together a firm cooperation between the two blades is automatically effected by the rhomboidal shape of the said blade.
  • FIG. 1 is a plan view of one blade
  • Fig. 2 a plan View of the other blade
  • Fig. 3 a side View of the blade illustrated in Fig. 2.
  • Fig. 4 shows the two blades fitted together to form the screw-driver according to the invention.
  • the screw-driver comprises two screwdriver blades or members, 1 and 2, provided at the ends with bits or knifelike edges preferably of different width with respect to one another.
  • the blade 1 is provided with a. slot 3 in the middle, through which the blade 2 of rhoinboidal shape may be passed (Fig. 4:). In this position the blades automatically interlock and cross each other, preferably at a right angle, and the blade which is not in use serves as a double-armed lever for turning the blade which is in use.
  • a screw-driver the combination with a screw-driver blade provided at both ends with a bit and with a slot in the middle, of a rhomboid-shaped screw-driver blade provided at both ends with a bit and adapted to be passed through the said slot whereby a firm cooperation between the two blades is effected by the rhomboidal shape of the blade last mentioned.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Harvester Elements (AREA)
  • Surgical Instruments (AREA)

Description

SCREW DRIVER Filed Sept. 6, 1925 In VeW/OI Naif/25f Shlager' P6P 4 i Patented Nov. 25, 11924.
area era that MATTHAUS SCI-ILAGER, F LINZ, AUSTRIA.
SCREW DRIVER.
Application filed September 6, 1923.
To all whom it may cancer-n:
Be it known that I, h l'arrrrlios SC'EILAGER.
a citizen of the Republic of Austria, residing at 3 Baumbachgasse, Linz, Austria, 6) have invented new and useful. Improve ments in a Screw Driver, of which the following is a. specification.
This invention relates to imprm'ements in screw-drivers of the kind in which a screw- 1 driver blade is adapted to be inserted in a slot provided in a second scrmv-driver blade, so that the two blades cross each other preferably at a right angle.
According to the present invention the screw-driver blade, adapted to be inserted in the slotted blade, is of a rhomboidal shape whereby, on fitting both blades together a firm cooperation between the two blades is automatically effected by the rhomboidal shape of the said blade.
One mode of carrying out the present invention is shown by way of example on the accompanying drawing, in which Fig. 1 is a plan view of one blade,
Fig. 2 a plan View of the other blade, and
Fig. 3 a side View of the blade illustrated in Fig. 2.
Fig. 4: shows the two blades fitted together to form the screw-driver according to the invention.
Serial No. 661,312.
The screw-driver comprises two screwdriver blades or members, 1 and 2, provided at the ends with bits or knifelike edges preferably of different width with respect to one another. The blade 1 is provided with a. slot 3 in the middle, through which the blade 2 of rhoinboidal shape may be passed (Fig. 4:). In this position the blades automatically interlock and cross each other, preferably at a right angle, and the blade which is not in use serves as a double-armed lever for turning the blade which is in use.
I claim In a screw-driver the combination with a screw-driver blade provided at both ends with a bit and with a slot in the middle, of a rhomboid-shaped screw-driver blade provided at both ends with a bit and adapted to be passed through the said slot whereby a firm cooperation between the two blades is effected by the rhomboidal shape of the blade last mentioned.
In testimony whereof I have signed my name to this specification.
MATTHAUS SCHLAGER.
Witnesses CARL COUDENLIN, ALBIN SCHILLER.
US661312A 1923-09-06 1923-09-06 Screw driver Expired - Lifetime US1516504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US661312A US1516504A (en) 1923-09-06 1923-09-06 Screw driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US661312A US1516504A (en) 1923-09-06 1923-09-06 Screw driver

Publications (1)

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US1516504A true US1516504A (en) 1924-11-25

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Family Applications (1)

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US661312A Expired - Lifetime US1516504A (en) 1923-09-06 1923-09-06 Screw driver

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467677A (en) * 1983-03-28 1984-08-28 Grifford Daniel W Combination chuck key tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467677A (en) * 1983-03-28 1984-08-28 Grifford Daniel W Combination chuck key tool

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