US1660905A - Concrete-form clamp - Google Patents

Concrete-form clamp Download PDF

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Publication number
US1660905A
US1660905A US137110A US13711026A US1660905A US 1660905 A US1660905 A US 1660905A US 137110 A US137110 A US 137110A US 13711026 A US13711026 A US 13711026A US 1660905 A US1660905 A US 1660905A
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notches
bifurcated
members
clamp
concrete
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US137110A
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John C Allman
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
    • E04G13/023—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor with means for modifying the sectional dimensions
    • E04G13/025—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor with means for modifying the sectional dimensions with stiff clamping means bracing the back-side of the form without penetrating the forming surface

Definitions

  • the invention relates to means for'holding assembledconcrete forms and has for its object the provision of a clamping means that is quickly and easily assembled and will eifectively hold the partsof the form to gether and may be quickly dismembered when it is desired to remove the form from the completed molded object.
  • a further object of the invention is the provision of a clamp made up of two memhers having bifurcated ends, and other members adapted to fit between the lingers of the. bifurcated ends and having oblique notches in one of their edges to engage pins straddling the bifurcated ends of one of the bifurcated members and one end of the other bifurcated member.
  • the remaining end of the last mentioned bifurcated member and the end of the other member in lapped relation therewith are notched to receive a latch member to hold the device in clamping position.
  • Figure 2 is an edge view
  • FIGS 3 and 4 sectional views on the planes indicated by the lines 33 and 44 of Figure 1,.
  • the device as disclosed in the drawings is designed to be used for holding the form members for casting a column or pillar, but obviously the device to be hereinafter described may be differently proportioned, without departing from the-spirit of the invention to hold form members for different kinds of concrete casting, so that the invention is not limited to the specific arrangement as shownexcept where limited in, the appended claim.
  • the form clamp comprises members 1, 2, 3, and t that may be made of any suitable material, and as hereinbefore stated of any relative proportions.
  • the members- 1 and 2 have their ends bifurcated as shown at 1, 1", 2 and 2, respectively.
  • the bifurcated ends 1, 1 and 2 have a series of pins 5 secured therethimigh and straddling the space between the fingers of the bifurcation, while th bifurcated end 2 is provided with a series of notches 6 arranged at substantially an angle of 45 degrees to the edge of the part 2.
  • the member 3 is provided with notches 3 at one of its ends, and notches 3", at its other end, said notches being on angles of substantially 45degrees, andthe part 3 is adapted to lit between the fingers of the bifurcated ends 1 and 2 and the notches 3 and 3* will engage pins 5 therethrough, it being understood that in adjusting the clamp on the mold one of the pins on each member 1 and 2 is selected to engage one of the notches in the respective end of the member 3 to snugly engage the members 1, 2, and 3 on the mold.
  • the member 4 is provided with notches 4: in one of its ends corresponding to the notches 3 and 3", hereinbefore described, and member 4 is adapted to fit be tween the fingers of the bifurcated ends 1 and 2 of the members 1 and 2 and be adjusted to snugly engage the mold by arranging one of the pins 5 in one of the notches 4.
  • a tool illustrated in' Figures 6 and 7 this tool comprising a handle 7 having a bifurcated end 8 between the legs of which is pivoted an arm 9 by means of a pin 10, and has a transverse pin 11 adjacent to its free end, and the ends of the pin extend above and below the upper and lower surface of the arm to form lugs adapted to engage aline'd notches 6 in the end. 2 of the part 2, and a pin 12 straddling the legs of the bifurcated end adjacent to their outer ends that is adapted to engage one of the notches 4 in the end of the part 41-.
  • the tool described is in the nature of a toggle lever, and it will be apparent that When it is in the position as indicated in Figure 1, the levermaybe operated to strain the ends of the members 2 and l to clamp the members around the form.
  • alatch member such as illustrated in Figure 5 is inserted as indicated, in Figure 1 to engage :in-oppositely disposed notches a and 6 to hold the clamp in strained position.
  • the latch ' comprises a plate 13 of tapered formation, the narrow end 14 being adapted to engage in notches 1 while thewider end 15 straddles the bifurcated end 2 and engages the notches therein.
  • the opening 16 inthe plate 13 may be use'd'for insertion of a tool for removing the latch when the clamp is to be dismem- 'bered, and may also be used for suspending the latch member from a pin or other holder when not in use.

Description

- c. ALLMAN CONCRETE FORM CLAMP v Filed Sept. 22. 19.26
2 She ets-Sheet 1 g-oento c LI kill/r12 1.
Feb. 28, 1928.
3 1,660,905 I J. c. ALLMAN CONCRETE FORM CLAMP.
Filed Sept. 2 2. 1926 2 Sheets-Sheet 2 Patented Feb. 28, 1928 UNITED STATES JOHN C. ALLMAN, or PITTSBURGH, PENNSYLVANIA.
CONCRETE-FORM CLAMP.
Application filed September 22, 1926. Serial No. 137,110.
The invention relates to means for'holding assembledconcrete forms and has for its object the provision of a clamping means that is quickly and easily assembled and will eifectively hold the partsof the form to gether and may be quickly dismembered when it is desired to remove the form from the completed molded object.
A further object of the invention is the provision of a clamp comprising separable members adapted to be adj ustably seci'zred togetherto form a polygon enclosing the form members,'with means to strain the clamp into intimate relation witn the form members and meansto hold theclamp in strained position. v
A further object of the invention is the provision of a clamp made up of two memhers having bifurcated ends, and other members adapted to fit between the lingers of the. bifurcated ends and having oblique notches in one of their edges to engage pins straddling the bifurcated ends of one of the bifurcated members and one end of the other bifurcated member. The remaining end of the last mentioned bifurcated member and the end of the other member in lapped relation therewith are notched to receive a latch member to hold the device in clamping position.
The invention will be described in detail hereinafter and will be found illustrated in the accompanying drawings in which Figure 1 is a plan view of a concrete form made in accordance with the invention,
Figure 2 is an edge view,
Figures 3 and 4, sectional views on the planes indicated by the lines 33 and 44 of Figure 1,.
Figure 5, a plan view of a latch member, and f Figures 6 and 7 plan and edge views, respectively, of the straining tool.
In the drawings similar reference characters will be used to designate corresponding parts throughout the several views.
The device as disclosed in the drawings is designed to be used for holding the form members for casting a column or pillar, but obviously the device to be hereinafter described may be differently proportioned, without departing from the-spirit of the invention to hold form members for different kinds of concrete casting, so that the invention is not limited to the specific arrangement as shownexcept where limited in, the appended claim.
The form clamp comprises members 1, 2, 3, and t that may be made of any suitable material, and as hereinbefore stated of any relative proportions. The members- 1 and 2 have their ends bifurcated as shown at 1, 1", 2 and 2, respectively. The bifurcated ends 1, 1 and 2 have a series of pins 5 secured therethimigh and straddling the space between the fingers of the bifurcation, while th bifurcated end 2 is provided with a series of notches 6 arranged at substantially an angle of 45 degrees to the edge of the part 2. l i
The member 3 is provided with notches 3 at one of its ends, and notches 3", at its other end, said notches being on angles of substantially 45degrees, andthe part 3 is adapted to lit between the fingers of the bifurcated ends 1 and 2 and the notches 3 and 3* will engage pins 5 therethrough, it being understood that in adjusting the clamp on the mold one of the pins on each member 1 and 2 is selected to engage one of the notches in the respective end of the member 3 to snugly engage the members 1, 2, and 3 on the mold. The member 4 is provided with notches 4: in one of its ends corresponding to the notches 3 and 3", hereinbefore described, and member 4 is adapted to fit be tween the fingers of the bifurcated ends 1 and 2 of the members 1 and 2 and be adjusted to snugly engage the mold by arranging one of the pins 5 in one of the notches 4. The other end of part dis provided with notches 42 similar to the notches 6 in the part 2, and the purpose of the notches 6 and v 49* will be now described.
After the members 1, 2, 3, and 4 have been assembled around the mold as hereinbefore described, the members are strained into clamping relation by means of a tool illustrated in'Figures 6 and 7, this tool comprising a handle 7 having a bifurcated end 8 between the legs of which is pivoted an arm 9 by means of a pin 10, and has a transverse pin 11 adjacent to its free end, and the ends of the pin extend above and below the upper and lower surface of the arm to form lugs adapted to engage aline'd notches 6 in the end. 2 of the part 2, and a pin 12 straddling the legs of the bifurcated end adjacent to their outer ends that is adapted to engage one of the notches 4 in the end of the part 41-.
The tool described is in the nature of a toggle lever, and it will be apparent that When it is in the position as indicated in Figure 1, the levermaybe operated to strain the ends of the members 2 and l to clamp the members around the form. To hold the clamp in a strained position, alatch member such as illustrated in Figure 5 is inserted as indicated, in Figure 1 to engage :in-oppositely disposed notches a and 6 to hold the clamp in strained position. The latch 'comprises a plate 13 of tapered formation, the narrow end 14 being adapted to engage in notches 1 while thewider end 15 straddles the bifurcated end 2 and engages the notches therein. The opening 16 inthe plate 13 may be use'd'for insertion of a tool for removing the latch when the clamp is to be dismem- 'bered, and may also be used for suspending the latch member from a pin or other holder when not in use.
It will be apparentthat to dismember the clamp'the toggle lever illustrated in Figures 6 and 7 may again be used to strain the lapped ends of the members 2 and 41 sothat bars and one end of the other of said bifurcated bars to engagenotches in the second mentioned bars, the notches engaged by said pins inclining outwardly towards the adjacent ends of the bars to draw theengaged bars inwardly of the clamp, the remaining end of one of the bifurcated bars being notched, the notches in the bifurcated bar and the adjacent end portion of the bar engaged thereby being inclined inwardly of the respective bars. and a latch to engage the oppositely disposed last mentioned notches.
In testimony whereof I aflix my'signature.
JOHN C. ALLMAN.
US137110A 1926-09-22 1926-09-22 Concrete-form clamp Expired - Lifetime US1660905A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441178A (en) * 1944-11-15 1948-05-11 Gheen R Abbott Rack and gear operated column clamp
US2518112A (en) * 1946-09-25 1950-08-08 Anthony Lucius Levi Brace for construction forms
US3650521A (en) * 1969-07-31 1972-03-21 Cmi Corp Concrete form clamp
US6666441B2 (en) * 2001-04-24 2003-12-23 Mark S. Grendahl Anchor bolt locating jig

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441178A (en) * 1944-11-15 1948-05-11 Gheen R Abbott Rack and gear operated column clamp
US2518112A (en) * 1946-09-25 1950-08-08 Anthony Lucius Levi Brace for construction forms
US3650521A (en) * 1969-07-31 1972-03-21 Cmi Corp Concrete form clamp
US6666441B2 (en) * 2001-04-24 2003-12-23 Mark S. Grendahl Anchor bolt locating jig
US20040080088A1 (en) * 2001-04-24 2004-04-29 Grendahl Mark S. Anchor bolt locating jig
US6854227B2 (en) 2001-04-24 2005-02-15 Mark S. Grendahl Anchor bolt locating jig

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