US668663A - Jack-screw. - Google Patents

Jack-screw. Download PDF

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Publication number
US668663A
US668663A US72366499A US1899723664A US668663A US 668663 A US668663 A US 668663A US 72366499 A US72366499 A US 72366499A US 1899723664 A US1899723664 A US 1899723664A US 668663 A US668663 A US 668663A
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United States
Prior art keywords
screw
standard
jack
jacks
prism
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Expired - Lifetime
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US72366499A
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Francis H Stillman
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Individual
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Priority to US72366499A priority Critical patent/US668663A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated

Definitions

  • FRANCIS H STILLMAN, OF BROOKLYN, NEW YORK.
  • Figs. 3 and 4 side and sectional elevations showing a taller standard
  • Fig. 5 is a plan of one of the standards.
  • This jack or set of jacks is especially designed to be used instead of blocks to aid in adjusting and properly supporting pieces of machinery and other objects on a machinesuch, for example, as a planing-machine or drilling-machine-to the action of which the objects are to be subjected; but this use of the invention is only one of many to which it is applicable, as will be apparent to any one who is familiar with the various operations commonly performed in a machine-shop.
  • The' jack is composed of three parts, these being a standard., a screw, and a nut.
  • the standard may have either of the forms shown in the drawings or a form 4differing from either of these in height.
  • Figs. l and 2 show the full size of the jack with the short standard l, and Figs.
  • the standard is a block consisting of the base l0 or l0', or a similar base, and the short hexagonal prism 11, and it contains the square hole l2., It is preferably a steel casting.
  • the screw 2 or the longer screw 2 is provided with the square head 20, which its loosely in the hole in the standard and is movable up and down, but
  • the nut 3 engages and supports the screw, the n'ut bearing on the top of the standard.
  • the standard When the jack is operated, the standard is held with a wrench engaging the prism l1 to prevent the standard from being turned, and the nut 3 is turned with another wrench to raise or lower the screw.
  • the hole in the standard and the head of the screw might have dierent forms from those shown, and a prism with a greater or less number of sides than the prism l1 has might be substituted for that prism.
  • a set consists of three jacks, one of them having the form shown in Figs. l and 2, another that shown in Figs. 3 and 4, and the other a form which is a mean between those shown, the screws of the jacks being interchangeable.
  • the utility of a set of jacks thus constituted is greater than that of a plurality of duplicate jacks, since it includes that resulting from the use of jacks of different heights, or jacks of the same height, as circumstances may require. With such a set of jacks it is plain that an object can be readily and accurately adjusted to any of a great number of -positions and there supported during the operation to be performed upon it.
  • a jack-screw comprising the combination of: a hollow standard composed of a fiatbottomed base and a prism fixed thereon; a screw provided with a head fitting the interior of the standard; means to prevent the screw'from turning in the standard; and a nut engaging the screwand having a bearing on the top of the standard; substantially as described.
  • a jack-screw comprising the combination of: a standard consisting of a-base and a prism ll'and containing a square hole l2; a screw having the head 20 fitting the hole l2; and a nut 3 engaging the screw and having a bearing on the top of the standard; substantially as described.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Adornments (AREA)

Description

"' 668663- Patented Feb; 2s', Ism.' F.H-.--f-sT||.|.-,MAN. J-AcK scnEw. (Application Bled (No Model.)
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UNITED STATES PATENT OFFICE.
FRANCIS H. STILLMAN, OF BROOKLYN, NEW YORK.
JACK-SCREW.
SPECIFICATION forming part of Letters Patent No. 668,663, dated February 26, 1901. Application iiled July 13. 1899. Serial No. 723,664. (No model.)
To all whom it may concern:
Be it known that I, FRANCIS H. STILLMAN, a citizen of the United States, and a resident of the borough of Brooklyn, in the county of Kings, in the city and State of NewYork, have invented a certain new and useful Improvement in J ack-Screws, of which the following is a full, clear, and exact description, referused.
y showing the standard in its shortest form;
Figs. 3 and 4, side and sectional elevations showing a taller standard, and Fig. 5 is a plan of one of the standards.
Similar reference-numerals designate like parts in different views.
This jack or set of jacks is especially designed to be used instead of blocks to aid in adjusting and properly supporting pieces of machinery and other objects on a machinesuch, for example, as a planing-machine or drilling-machine-to the action of which the objects are to be subjected; but this use of the invention is only one of many to which it is applicable, as will be apparent to any one who is familiar with the various operations commonly performed in a machine-shop. The' jack is composed of three parts, these being a standard., a screw, and a nut. The standard may have either of the forms shown in the drawings or a form 4differing from either of these in height. Figs. l and 2 show the full size of the jack with the short standard l, and Figs. 3 and 4 its full size with the taller standardl l. The standard is a block consisting of the base l0 or l0', or a similar base, and the short hexagonal prism 11, and it contains the square hole l2., It is preferably a steel casting. The screw 2 or the longer screw 2 is provided with the square head 20, which its loosely in the hole in the standard and is movable up and down, but
cannot be turned therein. The nut 3 engages and supports the screw, the n'ut bearing on the top of the standard.
When the jack is operated, the standard is held with a wrench engaging the prism l1 to prevent the standard from being turned, and the nut 3 is turned with another wrench to raise or lower the screw.
Obviously the hole in the standard and the head of the screw might have dierent forms from those shown, and a prism with a greater or less number of sides than the prism l1 has might be substituted for that prism.
A set consists of three jacks, one of them having the form shown in Figs. l and 2, another that shown in Figs. 3 and 4, and the other a form which is a mean between those shown, the screws of the jacks being interchangeable. The utility of a set of jacks thus constituted is greater than that of a plurality of duplicate jacks, since it includes that resulting from the use of jacks of different heights, or jacks of the same height, as circumstances may require. With such a set of jacks it is plain that an object can be readily and accurately adjusted to any of a great number of -positions and there supported during the operation to be performed upon it.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-
l. A jack-screw comprising the combination of: a hollow standard composed of a fiatbottomed base and a prism fixed thereon; a screw provided with a head fitting the interior of the standard; means to prevent the screw'from turning in the standard; and a nut engaging the screwand having a bearing on the top of the standard; substantially as described.
2. A jack-screw comprising the combination of: a standard consisting of a-base and a prism ll'and containing a square hole l2; a screw having the head 20 fitting the hole l2; and a nut 3 engaging the screw and having a bearing on the top of the standard; substantially as described.
FRANCIS H. STILLMAN.
In presence of- DAVID E. GRAHAM, EDWARD R. M. VANNETT.
US72366499A 1899-07-13 1899-07-13 Jack-screw. Expired - Lifetime US668663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US72366499A US668663A (en) 1899-07-13 1899-07-13 Jack-screw.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72366499A US668663A (en) 1899-07-13 1899-07-13 Jack-screw.

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2669061A (en) * 1952-06-11 1954-02-16 Louis M Orren Mechanic simulating toy with sound effect
US3118315A (en) * 1964-01-21 Loosli
US4534736A (en) * 1984-04-23 1985-08-13 Ben Cogdill Educational toy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118315A (en) * 1964-01-21 Loosli
US2669061A (en) * 1952-06-11 1954-02-16 Louis M Orren Mechanic simulating toy with sound effect
US4534736A (en) * 1984-04-23 1985-08-13 Ben Cogdill Educational toy

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