US1212743A - Screw-holding device. - Google Patents

Screw-holding device. Download PDF

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Publication number
US1212743A
US1212743A US7212516A US7212516A US1212743A US 1212743 A US1212743 A US 1212743A US 7212516 A US7212516 A US 7212516A US 7212516 A US7212516 A US 7212516A US 1212743 A US1212743 A US 1212743A
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US
United States
Prior art keywords
screw
jaws
holding device
spring
collar
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
US7212516A
Inventor
John W Cowell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US7212516A priority Critical patent/US1212743A/en
Application granted granted Critical
Publication of US1212743A publication Critical patent/US1212743A/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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/101—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means for hand-driven screw-drivers

Definitions

  • This invention relates to new and useful improvements in removable screw-holding devices to be used on various forms of screw drivers and consists of a simple and efiicient device of this nature so arranged that the head of a screw may be clamped and held while being set, the jaws being thrown automatically out of the path of the free end of the screw-driver for use in turning the screw.
  • the invention consistsof a simple and efficient device of this nature having various details of construction, combinations and arrangements of parts which will be hereinafter fully described, shown in the.
  • Figure l is aside elevation ofthe device.
  • Fig. 2. is a longitudinal sectional view.
  • Fig. 3 is a side elevation.
  • Fig. 4 is a sectional view on line 4.4 of Fig. 1.
  • Fig. 5 is a detail perspective of one of the concaved hinged fingers, and
  • Fig. 6 is a detailview- Specification of Letters Patent.
  • the disk is provided with oppositely disposed slots for the reception of the contracted ends N of the members 0, which contracted" porthe walls of the recesses having offsets N tions N are bent to form rolls and have pivotal connection with the slots, as shown.
  • a coiled spring R is interposed between the slotted portion of the bar K and the outer inclined convexed surfaces of the members O and serves to normally hold the jaws a slight distance rearward of the forward free end of the screw driver.
  • the jaws When the screw is turned, the jaws will draw back behind the forward free end of the screw driver, allowing the end of the same to project sufficiently to be and preferablyroughened orcorrugated on j the inside to more easily fasten to the blade when the spring is pushed ahead, and it will be noted that the more the claw is pushed forward the tighter the spring will press upon the tongue.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

J. W. COWELL.
SCREW HOLDING DEVICE.
'APPLICATIQN HLED JAN-.14, 191s.
1,21% 743. 1 5mm J.16,1917.
fl-amulet WWW 9 07777 WUOW JOHN w. GOWELL, or CHICAGO, ILLINOIS.
SCREW-HOLDING- DEVICE.
To all whom it may concern:
Be it known that I, JOHN W. CowE L, a citizen of the United States, residing at Chicago, in the county of Cook 'and'State of Illinois, have invented certain new and useful Improvements in Screw-Holding Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.
This invention relates to new and useful improvements in removable screw-holding devices to be used on various forms of screw drivers and consists of a simple and efiicient device of this nature so arranged that the head of a screw may be clamped and held while being set, the jaws being thrown automatically out of the path of the free end of the screw-driver for use in turning the screw.
The invention consistsof a simple and efficient device of this nature having various details of construction, combinations and arrangements of parts which will be hereinafter fully described, shown in the.
accompanying drawings and then specifically defined in the appended claim.
My invention is illustrated in the accompanying drawings, in which:
Figure l is aside elevation ofthe device. Fig. 2. is a longitudinal sectional view. Fig. 3 is a side elevation. Fig. 4 is a sectional view on line 4.4 of Fig. 1. Fig. 5 is a detail perspective of one of the concaved hinged fingers, and Fig. 6 is a detailview- Specification of Letters Patent.
Batented Jan. 16, 191?.
Application filed January 14, 1916. Serial No. 72,125.
adapted to receive said arms K. The disk is provided with oppositely disposed slots for the reception of the contracted ends N of the members 0, which contracted" porthe walls of the recesses having offsets N tions N are bent to form rolls and have pivotal connection with the slots, as shown. A coiled spring R is interposed between the slotted portion of the bar K and the outer inclined convexed surfaces of the members O and serves to normally hold the jaws a slight distance rearward of the forward free end of the screw driver.
The operation of my invention will be readily understood and is as follows: When it is desired to hold a screw for setting the same the collar may be pushed forward, causing the jaws to move inadvance of the free end of the screw driver and, as the claw B moves forward, the arms of the jaws beingat slight angles to each other, will cause the jaws to open to receive the head of the screw, the tapering portion of the head of the screw being held against the concaved surface of the jaws. The spring will then tend to hold the screw. against the jaws while the screw is being set. When the screw is turned, the jaws will draw back behind the forward free end of the screw driver, allowing the end of the same to project sufficiently to be and preferablyroughened orcorrugated on j the inside to more easily fasten to the blade when the spring is pushed ahead, and it will be noted that the more the claw is pushed forward the tighter the spring will press upon the tongue.
What I claim to be new is A removable screw driver attachment,
comprising a collar having a pair of projectlng toward the collar, and a coiled In testimony whereof I hereunto afiin my slgnature 1n presence of two WIiJIIGSSQS,
JGHN W. COVVELL.
jecting sereW engaging arms, a slotted disk through which the shank portion of the screw driver and said arms are adapted to pass, hinged fingers upon said disks-proo m Witnesses:
ELIAs Tonms,
spring about said fingers anddesigned to EMIL R, RosEN'rHAL.
bear against the collar.
US7212516A 1916-01-14 1916-01-14 Screw-holding device. Expired - Lifetime US1212743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US7212516A US1212743A (en) 1916-01-14 1916-01-14 Screw-holding device.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7212516A US1212743A (en) 1916-01-14 1916-01-14 Screw-holding device.

Publications (1)

Publication Number Publication Date
US1212743A true US1212743A (en) 1917-01-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
US7212516A Expired - Lifetime US1212743A (en) 1916-01-14 1916-01-14 Screw-holding device.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490211A (en) * 1945-01-05 1949-12-06 Edward T Dausch Screw gripping screw driver
US2497256A (en) * 1945-06-07 1950-02-14 Parker Mfg Company Screw holder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490211A (en) * 1945-01-05 1949-12-06 Edward T Dausch Screw gripping screw driver
US2497256A (en) * 1945-06-07 1950-02-14 Parker Mfg Company Screw holder

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