US961184A - Screw-driver. - Google Patents

Screw-driver. Download PDF

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Publication number
US961184A
US961184A US31376706A US1906313767A US961184A US 961184 A US961184 A US 961184A US 31376706 A US31376706 A US 31376706A US 1906313767 A US1906313767 A US 1906313767A US 961184 A US961184 A US 961184A
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Prior art keywords
blade
screw
tool
ribs
handle
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Expired - Lifetime
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US31376706A
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Edwin Walker
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00Screwdrivers
    • B25B15/02Screwdrivers operated by rotating the handle

Definitions

  • My invention relates to screw drivers, and analogous' tools of that class wherein a blade or shank is secured in a handle and adapted for use in the hands of a workman.
  • One object of my invention is to provide an improved tool which may be used b y placing it in line with the screw 1n the ordlnary way, or at an angle to the screw, ⁇ or purpose of exert-ing leverage thereon.
  • My new blade overcomes these diicultics because it is constructed to engage with a screw head in at least two diterent positions, to-wit:-in line with the screw, as ordinarily practiced, or across the screw for use as a lever thereon, whereby the tool may turn the screw without breaking or chipping the edges of the nick in the screw cad.
  • the blade has longitudinal ribs or flanges which, in addition to adding stidness to said blade, provide a number of ed es, either of which is adapted, when the too is placed across the screw, to have engagement with the slot or nick of said screw, thus ena-blin the tool to be used as a lever in starting t e. screw.
  • the ribs or flanges impart an irre lar cross sectional form to the blade, an when the bla-de is embedded in the handle, said ribs operate as keys in fastening the handle s0 firmly in place as to prevent the separation of the parts, and obviate the shank from turning inl the handle.
  • Figure 1 is a side elevation of my screw driver adapted 'for use in the ordinary way
  • Fig. 2 is another side elevation showing the screw driver ada. ted for use in a way to exert considerable evera on the screw
  • Fig. 3 is a detail view of t e tool shank removed from the handle
  • Fig. 4 is a cross-section on the line 4-4 of Fig. 2
  • Fig. 5 is a det-ail 'fragmentary perspective view, partly in section, of a commercial form of t-he tool shank or blade
  • Figs. 6 and 7 are views similar to Fig. 5 of other crosssectional forms of the tool shank or blade which may be employed in the manufacture of the tool.
  • A designates a blade or shank and B, is a suitable handle in which an @mi portion of the blade or shank is secured, said handle being, preferably, reduced at one end to receive a. suitable metallic ferrule Z2, which prevents splitting of the wood.
  • the handle is shown as having a ribbed grip ortion, b', but the particular construction o the handle and the material of which it is made are not important, hence they can be changed and modied at will.
  • my invention consists in the employment of a longitudinally ribbed blade or shank, such as A.
  • This shank in the form of construction shown by Figs. l to 5, inclusive of the drawings, 1s cruciform in cross-section, and it consists of a, blade, a, and a plurality of ribs a'.
  • the blade has a working end, c, which may or may not be beveled as desired, and the ribs a terminate short of or adjacent to, this end c.
  • the end portion of each 'rib is, preferably, reduced in width in a suitable way, such as by beveling them at c.
  • the ribs, a' extend the ull length of the blade, a, except at the working en of the tool, and they serve materinlly to stron hen the blade, thus reducing the size an weight of the tool by the use of less material or stock in the manufacture of such tools.
  • Another advanta e of the ribbed shank or blade is that the ri s serve as keys in fastening the blade firmly in the handle.
  • This handle is bored or drilled in one end with a suitable hole or -mg the ribs practically holes, and the end portion of the ribbed shank is forced into said bored part pf the handle, thus embedding the shank 1n tbe handle as shown by Fig. 4, the fibers ofthe wood handle being displaced during such operation of embedding the shank 1n the handle.
  • the particular cross-sectional form ofthe blade or shank is not material, and 1n F1 6 and 7, I have shown otherforms ⁇ of t e blade which may be employed, particularly for tools of larger sizes which are especlally adapted for heavy work.
  • the ribs extend long1- tudinally of the blade so that they serve to key the end portion thereof in the handle, and they also terminate short of the working end of the blade, as shown.
  • the distance that the ribs terminate from the working end ⁇ of the blade, and the particular shape of the ribs, are not material.
  • the metal may be rolled in the form of rods or bars of any suitable length and of the desired cross-sectional shape.
  • the rods may be out transversely into suitable lengths, and thereafter the ribs may be made shorter ⁇ than the blade by any suitable treatment, such as by cutting the tool in proper dies or by grinding the arts.
  • the ribs shall extend practically the length of the blade, because the'ribs ma be provided on that part of the blade which is to be embedded in the handle; but for certain classes of tools such as screw drivers, I prefer to strengthen the blade by extendthe full length of said blade.
  • My screw driver may be used to good advantage in either of the Ways shown by Figs. 1 and 2. Ordinarily the tool is used by inserting the workin end, c, in the slot or nick of thc screwhea as in Fig. 1, the blade being in alinemen with the screw. In certain kinds of work, however, it is quite diiiicult to start the screw because it is rusted in place. In such a ease, the driver may be turned at right angles to the screw, and oni of the ribs, as the rib a', of Fig. 2, may be fitted in the nick or slot of the screw-head, thus allowing the operator to exert considerable leverage on the screw.
  • This adaptation of the screw driver is an important feature of my invention, because it provides a Worin man with a tool which may be used to good advantage either as a lever or as an ordinary driver.
  • This advantage is secured by making the ribs and the blade of the same thickness, and by making said blade and ribs uniform in thickness throughout their length. It is evident that the tool may be placed in either of a numberof positions across the screw for the edge ofthe blade, or either of the ribs, to lit in the nick or slot, and that when thus placed, the screw may have engagement with the tool at either of a number of points along the edge of the blade, or a rib thereof.
  • the tool should be made in different sizes, and with blades and ribs of different thicknesses, thus enabling a tool of the proper thickness to have snug engagement with the nick or slot of the screwhead, and thereby minimize the tendency of the tool to slip out of place or to break the edges of the screw-head at the slot or nick thereof.
  • the form shown by Figs. l to 5 is well adapted to meet all practical requirements, but for large screws and heavy work, I may use either form shown by Fig. 6 or Fig. 7.
  • a tool comprising a blade, and a solid handle, said blade having reinforcing ribs which are embedded in the material of the handle and key the parts firmly together.
  • a tool comprising a blade, and a solid handle, said blade having reinforcing ribs which extend longitudinally from a point adjacent to the working end thereof into the material of said handle, said ribs keying the handle and blade solidly together.
  • a blade having a longitudinal reinforcing rib or iin-nge, the latter terminatQ ing short of an active end of the blade, said rib and blade each having thin edges adapted for engagement with a nick or slot in a screw-head.

Description

' E. wALKE-E.
SCREW DRIVER.
APPLIUAVTIONIILED APB.26, 1906.
.Patented .Time 14,1910.
-ArmH/vm i INI/ENIGH umh waz/Cer Y across the screw for the Bpeoication ot Lettera Intent.
Patented J une 14, 1910.
Application illed April 26, 1906. Seri'll No. 313.787.
To all whom 'it may con/cem.'
Be it known that I, EDWIN WALirnn, a citizen of the United States, residmg at Erie, in the county of Erie and State of Pennsylvania, have invented a certain new and useful ScrewDriver, of which the following is a specification.
My invention relates to screw drivers, and analogous' tools of that class wherein a blade or shank is secured in a handle and adapted for use in the hands of a workman.
One object of my invention is to provide an improved tool which may be used b y placing it in line with the screw 1n the ordlnary way, or at an angle to the screw,` or purpose of exert-ing leverage thereon.
It is found in many instances that a screw becomes rusted in its socket or in the material `in which it is embedded. The rust joint around the screw holds it so tightly that it is impossible to start or partially dis lodge the screw by the aid of an ordinary screw driver. It is necessary frequently to apply oil or a solvent to a rusted screw before it can be started but this is a slow and tedious operation because time is consumed in soaking the screw with such liquids. Ordinary screw drivers when held in line with a screw are not satisfactory because sutlicient leverage cannot be exerted on the head of a rusted screw for turning it, and owing to the tapering shape of such screw driver blades they cannot be turned across the screw for acting as a lever thereon. My new blade overcomes these diicultics because it is constructed to engage with a screw head in at least two diterent positions, to-wit:-in line with the screw, as ordinarily practiced, or across the screw for use as a lever thereon, whereby the tool may turn the screw without breaking or chipping the edges of the nick in the screw cad. I have reduced an improved tool which secures t ese practical advantages, and it has the further commercial advantage of being manufactured rapidly and with a small amount of labor.
In my improved tool, the blade has longitudinal ribs or flanges which, in addition to adding stidness to said blade, provide a number of ed es, either of which is adapted, when the too is placed across the screw, to have engagement with the slot or nick of said screw, thus ena-blin the tool to be used as a lever in starting t e. screw. The ribs or flanges impart an irre lar cross sectional form to the blade, an when the bla-de is embedded in the handle, said ribs operate as keys in fastening the handle s0 firmly in place as to prevent the separation of the parts, and obviate the shank from turning inl the handle.
In the drawings, Figure 1 is a side elevation of my screw driver adapted 'for use in the ordinary way; Fig. 2 is another side elevation showing the screw driver ada. ted for use in a way to exert considerable evera on the screw; Fig. 3 is a detail view of t e tool shank removed from the handle; Fig. 4 is a cross-section on the line 4-4 of Fig. 2; Fig. 5 is a det-ail 'fragmentary perspective view, partly in section, of a commercial form of t-he tool shank or blade, and Figs. 6 and 7 are views similar to Fig. 5 of other crosssectional forms of the tool shank or blade which may be employed in the manufacture of the tool.
A designates a blade or shank and B, is a suitable handle in which an @mi portion of the blade or shank is secured, said handle being, preferably, reduced at one end to receive a. suitable metallic ferrule Z2, which prevents splitting of the wood. The handle is shown as having a ribbed grip ortion, b', but the particular construction o the handle and the material of which it is made are not important, hence they can be changed and modied at will.
The important feature o my invention consists in the employment of a longitudinally ribbed blade or shank, such as A. This shank in the form of construction shown by Figs. l to 5, inclusive of the drawings, 1s cruciform in cross-section, and it consists of a, blade, a, and a plurality of ribs a'. The blade has a working end, c, which may or may not be beveled as desired, and the ribs a terminate short of or adjacent to, this end c. The end portion of each 'rib is, preferably, reduced in width in a suitable way, such as by beveling them at c. The ribs, a', extend the ull length of the blade, a, except at the working en of the tool, and they serve materinlly to stron hen the blade, thus reducing the size an weight of the tool by the use of less material or stock in the manufacture of such tools. Another advanta e of the ribbed shank or blade is that the ri s serve as keys in fastening the blade firmly in the handle. This handle is bored or drilled in one end with a suitable hole or -mg the ribs practically holes, and the end portion of the ribbed shank is forced into said bored part pf the handle, thus embedding the shank 1n tbe handle as shown by Fig. 4, the fibers ofthe wood handle being displaced during auch operation of embedding the shank 1n the handle. b
The particular cross-sectional form ofthe blade or shank is not material, and 1n F1 6 and 7, I have shown otherforms` of t e blade which may be employed, particularly for tools of larger sizes which are especlally adapted for heavy work. In the construction of Fig. 6, the blade, d, 1s shown as hav ing` a plurality of ribs, d', and d2, on the respective sides thereof, said ribs being located within the edges of the blade, whereas in Fi 7, the ribs e and e, are located at the e ges of the blade, e. In each form of construction, however, the ribs extend long1- tudinally of the blade so that they serve to key the end portion thereof in the handle, and they also terminate short of the working end of the blade, as shown. The distance that the ribs terminate from the working end `of the blade, and the particular shape of the ribs, are not material.
An advantage of my construction from the stand-point of economy in the manufacture, is that the metal may be rolled in the form of rods or bars of any suitable length and of the desired cross-sectional shape. The rods may be out transversely into suitable lengths, and thereafter the ribs may be made shorter `than the blade by any suitable treatment, such as by cutting the tool in proper dies or by grinding the arts.
Although I have shown and escribed my invention as especially adapted to the mannfacture of screw drivers, 1t will be understood that I do not int-end to restrict it to this particular tool, because the principle thereof may be used in the manufacture of many diifenent kinds of tools, such as chisels, ice picks, and a great variety of articles.
It is not essential in certain classes of tools that the ribs shall extend practically the length of the blade, because the'ribs ma be provided on that part of the blade which is to be embedded in the handle; but for certain classes of tools such as screw drivers, I prefer to strengthen the blade by extendthe full length of said blade.
My screw driver may be used to good advantage in either of the Ways shown by Figs. 1 and 2. Ordinarily the tool is used by inserting the workin end, c, in the slot or nick of thc screwhea as in Fig. 1, the blade being in alinemen with the screw. In certain kinds of work, however, it is quite diiiicult to start the screw because it is rusted in place. In such a ease, the driver may be turned at right angles to the screw, and oni of the ribs, as the rib a', of Fig. 2, may be fitted in the nick or slot of the screw-head, thus allowing the operator to exert considerable leverage on the screw. This adaptation of the screw driver is an important feature of my invention, because it provides a Worin man with a tool which may be used to good advantage either as a lever or as an ordinary driver. This advantage is secured by making the ribs and the blade of the same thickness, and by making said blade and ribs uniform in thickness throughout their length. It is evident that the tool may be placed in either of a numberof positions across the screw for the edge ofthe blade, or either of the ribs, to lit in the nick or slot, and that when thus placed, the screw may have engagement with the tool at either of a number of points along the edge of the blade, or a rib thereof.
It is evident that the tool should be made in different sizes, and with blades and ribs of different thicknesses, thus enabling a tool of the proper thickness to have snug engagement with the nick or slot of the screwhead, and thereby minimize the tendency of the tool to slip out of place or to break the edges of the screw-head at the slot or nick thereof. For small and ordinary sizes of screw drivers, the form shown by Figs. l to 5 is well adapted to meet all practical requirements, but for large screws and heavy work, I may use either form shown by Fig. 6 or Fig. 7.
Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. A tool comprising a blade, and a solid handle, said blade having reinforcing ribs which are embedded in the material of the handle and key the parts firmly together.
2. A tool comprising a blade, and a solid handle, said blade having reinforcing ribs which extend longitudinally from a point adjacent to the working end thereof into the material of said handle, said ribs keying the handle and blade solidly together..
3. In a tool, a blade having a longitudinal reinforcing rib or iin-nge, the latter terminatQ ing short of an active end of the blade, said rib and blade each having thin edges adapted for engagement with a nick or slot in a screw-head.
4. In a tool, a tool blade of double cruciform cross-section.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
EDWIN WALKER.
Witnesses:
Jas. H. GRIFFIN, H. I. BERNHARD.
US31376706A 1906-04-26 1906-04-26 Screw-driver. Expired - Lifetime US961184A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537029A (en) * 1946-08-06 1951-01-09 Phillips Screw Co Method for manufacturing screw drivers
US2565948A (en) * 1946-08-06 1951-08-28 Phillips Screw Co Method of manufacturing screw drivers
US3060565A (en) * 1959-01-09 1962-10-30 Rudolph M Vaughn Method of making improved screw driver
US3405748A (en) * 1966-06-29 1968-10-15 Sorteberg Johannes Torsion tube screw driver
US3809136A (en) * 1973-05-03 1974-05-07 R Cournoyer Three-way screw driver

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537029A (en) * 1946-08-06 1951-01-09 Phillips Screw Co Method for manufacturing screw drivers
US2565948A (en) * 1946-08-06 1951-08-28 Phillips Screw Co Method of manufacturing screw drivers
US3060565A (en) * 1959-01-09 1962-10-30 Rudolph M Vaughn Method of making improved screw driver
US3405748A (en) * 1966-06-29 1968-10-15 Sorteberg Johannes Torsion tube screw driver
US3809136A (en) * 1973-05-03 1974-05-07 R Cournoyer Three-way screw driver

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