US827874A - Clamp for foundry-flasks. - Google Patents

Clamp for foundry-flasks. Download PDF

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Publication number
US827874A
US827874A US1906295122A US827874A US 827874 A US827874 A US 827874A US 1906295122 A US1906295122 A US 1906295122A US 827874 A US827874 A US 827874A
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United States
Prior art keywords
foundry
shank
clamp
flasks
movable jaw
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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
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Oscar F Lindberg
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Individual
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Priority to US1906295122 priority Critical patent/US827874A/en
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    • 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
    • B25B1/00—Vices
    • B25B1/06—Arrangements for positively actuating jaws
    • B25B1/10—Arrangements for positively actuating jaws using screws
    • B25B1/12—Arrangements for positively actuating jaws using screws with provision for disengagement
    • B25B1/125—Arrangements for positively actuating jaws using screws with provision for disengagement with one screw perpendicular to the jaw faces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/20—Clamps

Definitions

  • This invention relates to clamps for foundry-flasks. Owing to the rough usage to which clamps of this kind are subjected it is necessary to construct them with a great amount of strength. With clamps that are not adjustable it is not hard to provide a strong and durable construction; but with adjustable clamps a different problem is presented; and the object of my invention is to accomplish this end with this latter type of clamp.
  • Figure 1 is a perspective view of a foundry-flask with the sections held together by my improved clamp.
  • Fig. 2 is a sectional view of the flask, showing the m0v. able jaw of the clamp in section.
  • Fig. 3 is a side elevation of the fixed jaw and shank.
  • Fig. 4 is a perspective view of the movable jaw, and
  • Fig. 5 is a perspective view of the usual foundry-wedges.
  • 1 indicates the mold-sections, and 2 the foundry-wedges, which cooperate with the clamp to obtain small adjustments.
  • the clamp comprises three parts'the fixed jaw 3, the shank 4, and the movable jaw 5, adapted to slide on the shank and prevented from sliding off of the said shank by lugs 6, extending from opposite sides thereof.
  • the shank is provided on its rear face with a plurality of notches or grooves 7, preferably semicylindrical in form, one wall 8 of each of which is inclined and is longer than its other wall 9, while the face of the shank between the short wall and the long wall of adjacent grooves is beveled or inclined at 10.
  • the movable jaw is provided with a shank-opening having a portion 11 of its rear wall adapted to engage any one of the inclined faces 10 on the shank when a semicylindrical lug 13, also on the rear wall of the shank and at the end nearest the clamping-face of the j aw-opening, enters the notch 7 at the lower end of an inclined face 10.
  • the front or other wall 14 of the shank-opening is formed to permit a movable jaw to turn to throw the lug 13 and portion 11 of rear wall of the shank-opening out of contact with the walls of the groove 7 and the incline face 10.
  • the movable jaw is deflected or bent at 15.
  • the rough adjustment of the jaws is first obtainedthat is, the movable jaw is moved toward the stationary jaw, but not so far that the mold-sections are clamped between them, as it is desirable to employ the ordinary foundry-wedges 2.
  • the employment of the foundry-wedges makes it possible to secure a greater clamping action, and after the molding operation is completed it requires but a blow of the hammer on the wedges to release the clamp.
  • the inclined faces 10 assist the notches in holding the movable jaw, and should the lug 13 or the short wall of the notches break or become worn the inclined face alone will hold the jaw against movement. Further, this adjustment is particularly adapted for foundry-clamps, which are subjected to very rough treatment and must. be exceedingly strong in all particulars. Another advantage of this adjustment is that there are no small joints or crevices in which sand is liable to stick.
  • a fixed jaw to engage with one mold-section, a shank provided with a plurality of grooves and inclined faces between ad'acent grooves, and a movable jaw having a lug to enter any one of the grooves, and a face to contact with an inclined face on the shank when the lug is in one of the grooves.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)

Description

' PATENTED AUG. 7, 1906.
0. F. LINDBERG. CLAMP FOR FOUNDRY FLASKS.
APPLICATION FILED 14H. 8. 1906,.
21% humus QWMQQ 1n: NORRIS PETERS cm, WASHINUTON. n. c.
UNITED STATES PATENT OFFICE.-
Specification of Letters Patent.
Patented Aug. '7, 1906.
Application filed January 8, 1906. Serial No. 295.122.
To all whom it may concern.-
Be it known'that I, OsoAR Fv LINDBERG, a citizen of the United States, and a resident of Bradford, in the county of McKean and State of Pennsylvania, have invented certain new and useful Improvements in Clamps for Foundry-Flasks, of which the following is a specification.
This invention relates to clamps for foundry-flasks. Owing to the rough usage to which clamps of this kind are subjected it is necessary to construct them with a great amount of strength. With clamps that are not adjustable it is not hard to provide a strong and durable construction; but with adjustable clamps a different problem is presented; and the object of my invention is to accomplish this end with this latter type of clamp.
Other and further objects will appear in the following description and will be more particularly pointed out in the appended claim.
In the drawings, Figure 1 is a perspective view of a foundry-flask with the sections held together by my improved clamp. Fig. 2 is a sectional view of the flask, showing the m0v. able jaw of the clamp in section. Fig. 3 is a side elevation of the fixed jaw and shank. Fig. 4 is a perspective view of the movable jaw, and Fig. 5 is a perspective view of the usual foundry-wedges.
Referring more particularly to the drawings, 1 indicates the mold-sections, and 2 the foundry-wedges, which cooperate with the clamp to obtain small adjustments. The clamp comprises three parts'the fixed jaw 3, the shank 4, and the movable jaw 5, adapted to slide on the shank and prevented from sliding off of the said shank by lugs 6, extending from opposite sides thereof.
To hold the movable jaw 5 in various positions, thereby providing for its adjustment on the shank, the shank is provided on its rear face with a plurality of notches or grooves 7, preferably semicylindrical in form, one wall 8 of each of which is inclined and is longer than its other wall 9, while the face of the shank between the short wall and the long wall of adjacent grooves is beveled or inclined at 10.
To permit the movable jaw to slide on the shank and to interlock therewith, the movable jaw is provided with a shank-opening having a portion 11 of its rear wall adapted to engage any one of the inclined faces 10 on the shank when a semicylindrical lug 13, also on the rear wall of the shank and at the end nearest the clamping-face of the j aw-opening, enters the notch 7 at the lower end of an inclined face 10. The front or other wall 14 of the shank-opening is formed to permit a movable jaw to turn to throw the lug 13 and portion 11 of rear wall of the shank-opening out of contact with the walls of the groove 7 and the incline face 10. To permit the clamping-face of the movable jaw to be parallel with the clamping-face of the fixed jaw, the movable jaw is deflected or bent at 15.
In operation the rough adjustment of the jaws is first obtainedthat is, the movable jaw is moved toward the stationary jaw, but not so far that the mold-sections are clamped between them, as it is desirable to employ the ordinary foundry-wedges 2. The employment of the foundry-wedges makes it possible to secure a greater clamping action, and after the molding operation is completed it requires but a blow of the hammer on the wedges to release the clamp.
The inclined faces 10 assist the notches in holding the movable jaw, and should the lug 13 or the short wall of the notches break or become worn the inclined face alone will hold the jaw against movement. Further, this adjustment is particularly adapted for foundry-clamps, which are subjected to very rough treatment and must. be exceedingly strong in all particulars. Another advantage of this adjustment is that there are no small joints or crevices in which sand is liable to stick.
Having thus described my invention, what I claim, and desire to secure by Letters Pat ent, is
In a foundry-clamp, a fixed jaw to engage with one mold-section, a shank provided with a plurality of grooves and inclined faces between ad'acent grooves, and a movable jaw having a lug to enter any one of the grooves, and a face to contact with an inclined face on the shank when the lug is in one of the grooves.
The foregoing specification signed at Bradford, Pennsylvania, this 28th day of December, 1905.
OSCAR F. LINDBERG. In presence of F. A. HERPEL, O. A. FAY.
US1906295122 1906-01-08 1906-01-08 Clamp for foundry-flasks. Expired - Lifetime US827874A (en)

Priority Applications (1)

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US1906295122 US827874A (en) 1906-01-08 1906-01-08 Clamp for foundry-flasks.

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US1906295122 US827874A (en) 1906-01-08 1906-01-08 Clamp for foundry-flasks.

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US827874A true US827874A (en) 1906-08-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157397A (en) * 1962-06-26 1964-11-17 Furst Mark Clamping device
US6244581B1 (en) 2000-02-07 2001-06-12 William J. Arnhold Wedge clamp
US6698739B1 (en) * 2001-11-19 2004-03-02 Mckim Mark D. Apparatus for retaining objects on a surface and related methods

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157397A (en) * 1962-06-26 1964-11-17 Furst Mark Clamping device
US6244581B1 (en) 2000-02-07 2001-06-12 William J. Arnhold Wedge clamp
US6698739B1 (en) * 2001-11-19 2004-03-02 Mckim Mark D. Apparatus for retaining objects on a surface and related methods

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