US2634487A - Pivoted test clamp - Google Patents

Pivoted test clamp Download PDF

Info

Publication number
US2634487A
US2634487A US755531A US75553147A US2634487A US 2634487 A US2634487 A US 2634487A US 755531 A US755531 A US 755531A US 75553147 A US75553147 A US 75553147A US 2634487 A US2634487 A US 2634487A
Authority
US
United States
Prior art keywords
jaws
clamp
blocks
shaft
plate
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
US755531A
Inventor
Robert W Rogers
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.)
Scott Testers Inc
Original Assignee
Scott Testers Inc
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 Scott Testers Inc filed Critical Scott Testers Inc
Priority to US755531A priority Critical patent/US2634487A/en
Application granted granted Critical
Publication of US2634487A publication Critical patent/US2634487A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G01N3/04—Chucks
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y10T24/3936—Pivoted part
    • Y10T24/394—Cam lever
    • 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
    • Y10T279/00—Chucks or sockets
    • Y10T279/19—Radially reciprocating jaws
    • Y10T279/1953—Toggle actuated

Definitions

  • This invention relates to a clamp for gripping a specimen to be tested and more particularly -to a clamp usually referred to as a toggle clamp.
  • Clamps of the character here referred to provide movable jaws which are each hung upon a pair of links to move in parallel relation as the jaw moves relative to the part to which the links are connected.
  • the links cannot properly function at an angle higher than 20 to a perpendicular to the face of the jaws as the proper clamping action is not obtained.
  • a clamp has a very limited range as to the thickness of a specimen which may be received in the clamp. It is desirable that the links which mount the jaws be at approximately 10 to a perpendicular to the jaws'in order that the best gripping action at maximum pull may be provided for. It is also desirable that the specimen clamped shall be on the center line of pull on the clamp in order that irregularities due to angular direction of pull may be minimized or eliminated.
  • One of the objects of this invention is to provide an adjustment for the jaws which will enable a single clamp to have a larger range of capacity for engaging work of different thick nesses.
  • Another object of this invention is to provide an adjustment which may be calibrated and marked so that the jaws may be preset for different thicknesses or for different types of specimens.
  • Another object of this invention is to provide an adjustment which may be provided very accurately by reason of the rotation of a member to position the blocks.
  • Fig. 1 is a top plan view of the clamp
  • Fig. 2 is a central sectional view through the clamp
  • Fig. 3 is a section on line 3-3 of Fig. 2;
  • Fig. 4 is a fragmental detailed view illustrating the connection between one of the jaws and one of the blocks of the clamp.
  • I provide a body of a general frame structure which has guide ways formed in it for directing the movement of a pair of blocks toward and from each other.
  • Each of these blocks provides an anchor or mounting means for one of the gripping jaws for the work, the jaws being pivoted to the block by two pairs ofv parallelly arranged links.
  • the arrangement is such that, when the work is gripped by the jaws, the links will be at an angle tol a'perpendicular to'the, face of the jaws so that, as" pull occurs on'the jaws, the jaws will tend to swing the links and will move toward each other into firmer gripping relation.
  • the blocks are adjustably mounted in the body so a different spaced relation of the jaws may occur, the adjustment being by means of rotary members, such as an eccentric, which will extend through the block with the eccentric working in a recess in the block for engaging the opposite walls of the recess to move the block in its guide for the accommodation of different thicknesses of specimens and a calibration is provided so that 'at different positions of rotation specimens of different thicknesses may be noted.
  • rotary members such as an eccentric
  • Each of the jaws may be provided with an ejecting pin, and the jaws may be equipped with a means so that through a single handle both jaws are moved together by one hand of Guides for positioning the work" the operator. may be conveniently positioned in the clamp.
  • the body of the clamp is designated generally l and comprises a pair of plates H and I2 which are sup.- ported in spaced relation by means of spacing members l3 placed along the longitudinal edges of the plates II and I2 and provide with the Each of the blocks has a vertically extending recess providing opposite abutting walls 21 and 22.
  • a shaft 23 has a bearing 24 in the plate H and a bearing 25 in the plate l2, and
  • a second disk 35 is positioned beneath the disk 30 and beneath this there is a dial or grad-- uated plate 36. Both the disk 35 and the dial plate 36 are secured to the plate II by means of screws 31. The upper annular edge of the plate 35 and the lower annular edge of the plate '30 are provided with serrations, as shown at. 38in Fig. 2, so that when. these disks are movedtogether by reason of the thumb nut 32 the shaft 3 is locked in position. Thus, for adjustment of the block 15 it is necessary to loosen the nut 32 which permits the spring to raise the disk 30 'along its key way, thus permitting the shaft to be turned until a pointer 39 registers with the proper indication on the graduated dial 36. Then'.
  • the under: surface 51 f this. bridge may serve as. ameans for. limiting or 'guidingone, end of the, specimen into.-
  • the clamping jaws. are designated 52. and consist. of a T-block53having a, separabl face member 54' with serrations. thereon which may be attached by. means. of-screws 35. to the, block 53.
  • a spring-pressed. pin 56. is. slidable in the block and facing member andis pressed by a spring, 58. outwardly and is limitedinits movement. by the. facing member 54. engaging, the shoulder. formed by. the. head 51 onth pin 56.
  • Each ofthese. jaws. 52 is. attached'to one ofthe. blocks: 15 by links 69. and 61 arranged. in: parallel relation. and pivoted as:at.-62. and 63. to the block: andas at. 6111 and: 65. to. the. jaw. These parallelly. arranged linksare. provided both at.
  • jaw which is equipped. with the handle as by. means of a screw 19: whichbar is slidably related to the other jaw in guides H so thatas, one jaw israised theother jaw will also be. raised and-thus will swing toward and. from the.
  • This bar alsomay be a means for limiting: the insertion of the. work between the jaws by acting as. a
  • the blocks may be adjusted in smallincre- This is a feature which is particularly useful jnvtestinga sample in which thetwo gripped faces.
  • boss 48. 15 provided on 4 have different surface characteristics of compressibility and which by this oiT-center adjustment enables the sample? to be-- kept 1 centralized.
  • Each block may beeaccurately. set by its. dial 1 moving under pointer 39 and will be held in position by the serrations beneath the plate.
  • a clamp. for; gripping. a specimen. for testing or the: likev having a body,, a, pair of. hole. low blocks slidablyguided in said'body, appair of, gripping jaws, links movably-mountingsaid jaws with reference tosa-id. blocks; meansifor adjust: ing. the position of at least: oneof saidblock comprising a rotatableshaftextending through. the said one block, means carried,bysaid,shaft, and extending into engagement with th inner. Walls of said one block for; mcving thevsamez towards or from said jawss uponturnin said; shaft, an abutment carried; by; said body; an.
  • said first abutment. is; a. serrated. disk. fixed. on said body and said second: abutment is a sime ilar disk slidably mountedion-saidishaft.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Description

ROGERS pril 14, 1953 PIVOTED TEST CLAMP Filed June 18, 1947 lllill w! my W W w W a y y M W #w 6 97% W5 y d NV u 92% w W 1 A 7 W 2 V Z 4 \lzl 51,? 3/2 A TORNEYS,
Patented Apr. 14, 1953 PIVOTED TEST CLAMP Robert W. Rogers, Harrington, It. I., asslgnor to Scott Testers, Inc., a corporation of Rhode Island Application June 18, 1947, Serial No. 755,531
3 Claims.
, 1 This invention relates to a clamp for gripping a specimen to be tested and more particularly -to a clamp usually referred to as a toggle clamp.
Clamps of the character here referred to provide movable jaws which are each hung upon a pair of links to move in parallel relation as the jaw moves relative to the part to which the links are connected. The links cannot properly function at an angle higher than 20 to a perpendicular to the face of the jaws as the proper clamping action is not obtained. Thus, such a clamp has a very limited range as to the thickness of a specimen which may be received in the clamp. It is desirable that the links which mount the jaws be at approximately 10 to a perpendicular to the jaws'in order that the best gripping action at maximum pull may be provided for. It is also desirable that the specimen clamped shall be on the center line of pull on the clamp in order that irregularities due to angular direction of pull may be minimized or eliminated.
One of the objects of this invention is to provide an adjustment for the jaws which will enable a single clamp to have a larger range of capacity for engaging work of different thick nesses.
Another object of this invention is to provide an adjustment which may be calibrated and marked so that the jaws may be preset for different thicknesses or for different types of specimens.
Another object of this invention is to provide an adjustment which may be provided very accurately by reason of the rotation of a member to position the blocks.
With these and other objects in view, the invention consists of certain novel features of construction as will be more fully described and particularly pointed out in the appended claims.
In the accompanying drawings:
Fig. 1 is a top plan view of the clamp;
Fig. 2 is a central sectional view through the clamp;
Fig. 3 is a section on line 3-3 of Fig. 2;
Fig. 4 is a fragmental detailed view illustrating the connection between one of the jaws and one of the blocks of the clamp.
In proceeding with this invention, I provide a body of a general frame structure which has guide ways formed in it for directing the movement of a pair of blocks toward and from each other. Each of these blocks provides an anchor or mounting means for one of the gripping jaws for the work, the jaws being pivoted to the block by two pairs ofv parallelly arranged links. The arrangement is such that, when the work is gripped by the jaws, the links will be at an angle tol a'perpendicular to'the, face of the jaws so that, as" pull occurs on'the jaws, the jaws will tend to swing the links and will move toward each other into firmer gripping relation. The blocks are adjustably mounted in the body so a different spaced relation of the jaws may occur, the adjustment being by means of rotary members, such as an eccentric, which will extend through the block with the eccentric working in a recess in the block for engaging the opposite walls of the recess to move the block in its guide for the accommodation of different thicknesses of specimens and a calibration is provided so that 'at different positions of rotation specimens of different thicknesses may be noted.
Each of the jaws may be provided with an ejecting pin, and the jaws may be equipped with a means so that through a single handle both jaws are moved together by one hand of Guides for positioning the work" the operator. may be conveniently positioned in the clamp.
With reference to the drawings, the body of the clamp is designated generally l and comprises a pair of plates H and I2 which are sup.- ported in spaced relation by means of spacing members l3 placed along the longitudinal edges of the plates II and I2 and provide with the Each of the blocks has a vertically extending recess providing opposite abutting walls 21 and 22. A shaft 23 has a bearing 24 in the plate H and a bearing 25 in the plate l2, and
on this shaft there is an eccentric 26 which en-. gages the opposite surfaces 2| and 22 of the recess so that as the shaft 23 is rotated the block IE will be moved inwardly or outwardly of the framework or body l0. Springs 21 support the blocks IS in a position raised above the lower plate 12, while the blocks slide in the guide ways M which direct their in and out movement. A disk 30 is keyed to the shaft 23 and may move vertically along this shaft and is pressed upwardly by a spring 3! when released by the thumb nut 32 which has threaded engagement as at 33 with the shaft 23. A spring ring 34 prevents this nut from being accidentally lifted too high on the shaft.
A second disk 35 is positioned beneath the disk 30 and beneath this there is a dial or grad-- uated plate 36. Both the disk 35 and the dial plate 36 are secured to the plate II by means of screws 31. The upper annular edge of the plate 35 and the lower annular edge of the plate '30 are provided with serrations, as shown at. 38in Fig. 2, so that when. these disks are movedtogether by reason of the thumb nut 32 the shaft 3 is locked in position. Thus, for adjustment of the block 15 it is necessary to loosen the nut 32 which permits the spring to raise the disk 30 'along its key way, thus permitting the shaft to be turned until a pointer 39 registers with the proper indication on the graduated dial 36. Then'.
45 comprising a horizontal plate 46 and two. in-,
clined plates 47 spacing the plate 46 a distance above. the; plate ll. this. plate 66 having; a threaded: socket se for the reception of an attaching rodrupon which pull,.or: resistance to pull on the other end of the; specimen may be applied. The under: surface 51 f this. bridge may serve as. ameans for. limiting or 'guidingone, end of the, specimen into.-
a desired position between the clamping jaws.
The clamping jaws. are designated 52. and consist. of a T-block53having a, separabl face member 54' with serrations. thereon which may be attached by. means. of-screws 35. to the, block 53. A spring-pressed. pin 56. is. slidable in the block and facing member andis pressed by a spring, 58. outwardly and is limitedinits movement. by the. facing member 54. engaging, the shoulder. formed by. the. head 51 onth pin 56. Each ofthese. jaws. 52 is. attached'to one ofthe. blocks: 15 by links 69. and 61 arranged. in: parallel relation. and pivoted as:at.-62. and 63. to the block: andas at. 6111 and: 65. to. the. jaw. These parallelly. arranged linksare. provided both at.
thefront and back edgeof. the jaws and. blocks.
One of. the pivotscomprises. a.. shaft 66. (see,
Fig. 3) whichpasses throughone ofthe blocks and. has itslink, such a561, fixed t the shaft. Thisshaftis also provided with a lever: 6-! act.-
ing' asahandlewhichis securedlin place on the.
shaft by anut 68 .so that movementof' this lever to: difierent positions will serve to swingv the. link fil' and by reason of: the connections above.
mentioned also the link 611 to movethe'jaw. to.- wardand fromlacenter line throughtheclamp.
Inorder that both. jaws may be moved at,
th'e same time, I' providea bar 69.secured.to.the
jaw: which is equipped. with the handle as by. means of a screw 19: whichbar is slidably related to the other jaw in guides H so thatas, one jaw israised theother jaw will also be. raised and-thus will swing toward and. from the.
center .of the clamp alike amount. This bar alsomay be a means for limiting: the insertion of the. work between the jaws by acting as. a
, back guide in instances where desired.
Fromthe above, it will be apparent. that. I have. provided a pair of. jaws which will remain centralized. with reference to. the;pul1 rod, in socket49. at all timesif the. blocks which carry themare. once. adjustedto: equalpositions from the center line.
The blocks may be adjusted in smallincre- This is a feature which is particularly useful jnvtestinga sample in which thetwo gripped faces.
A; boss 48. 15 provided on 4 have different surface characteristics of compressibility and which by this oiT-center adjustment enables the sample? to be-- kept 1 centralized. Each block may beeaccurately. set by its. dial 1 moving under pointer 39 and will be held in position by the serrations beneath the plate.
When. it. is desired to release the jaws from gripping position which they will assume as the work ispulled; it is merely necessary to move thehandlefi'! by one hand for lifting the jaws and releasing the work. As the work is released, the spring. pins will eject the work from the aws.
When used in a testing machine, two of these clamps, one upside down" with the plate l2 at theto as here shown, are. utilized; togrip the specimen.
I claim:
1. In. a clamp. for; gripping. a specimen. for testing or the: likev having a body,, a, pair of. hole. low blocks slidablyguided in said'body, appair of, gripping jaws, links movably-mountingsaid jaws with reference tosa-id. blocks; meansifor adjust: ing. the position of at least: oneof saidblock comprising a rotatableshaftextending through. the said one block, means carried,bysaid,shaft, and extending into engagement with th inner. Walls of said one block for; mcving thevsamez towards or from said jawss uponturnin said; shaft, an abutment carried; by; said body; an. abutment slidably mounted onJsaim shaftand movable into enga ement. with the. first: said abutmentfor locking said-shaftagainst turm ing, and resilient means:- biasinggsa id... second; abutment for movement: awa efrom. said, first. abutment. V
2. In a clamp as set forth in claim 1 wher in. said first abutment. is; a. serrated. disk. fixed. on said body and said second: abutment is a sime ilar disk slidably mountedion-saidishaft.
3. In aclamp as set forth inclaim. 1': further.
comprising a pointer carried by the secondsaid: abutment movable over. a graduateddiskifor 'ine di'cating the adjustablepositiontof said one block:
ROBERT ROGERS;
References Cited in the: fileofsthismatenti UNITED STATES PA'I'ENTS Number Name Date.
273,195 Utter Feb;v 27, 1883 600,535- Homan Mar, 15, 896:. 675,047 MacGarvey .May=2&,.199.1 749,732 Hanson Jan; 19;.1904. 824,000 Elmer s J1me; 19;.l 05 920,820 Brown. 4; 19.09
1,051,585: Hiniker." Jan. 28",. 1.913 1,127,066 Minkler Feb. 2, 1915-: 1,292,930 Unger. Jan. 2 8;; 1919 1,566,006: Hiniker ...Dec. 15; 1925 1,692,398 Weaver ".Nov. 2 0,.1928; 1,762,037 Taylor; ...J.une;3, 1930: 1,837,990 Otis- Dec. 22,1931 1,981,304. Brandt Nov. 20, 1934 1,982,482 Rhodes. Nov, 27,1934, 2,114,305 Johansen Apr. 19., 19 38 2,173,079. Moody se t..12, 19.39:, 2,417,478 Flowers Mar .18, 1947. 2,462,536 Muter Feb; 22., 19.49;
FOREIGN PATENTS Number Country. A Date 285,389 Germany -1--. Apr. .24;, 191'4. 482,984 Great, Britain e. Apr... 8,' 19.38,?
US755531A 1947-06-18 1947-06-18 Pivoted test clamp Expired - Lifetime US2634487A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US755531A US2634487A (en) 1947-06-18 1947-06-18 Pivoted test clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US755531A US2634487A (en) 1947-06-18 1947-06-18 Pivoted test clamp

Publications (1)

Publication Number Publication Date
US2634487A true US2634487A (en) 1953-04-14

Family

ID=25039556

Family Applications (1)

Application Number Title Priority Date Filing Date
US755531A Expired - Lifetime US2634487A (en) 1947-06-18 1947-06-18 Pivoted test clamp

Country Status (1)

Country Link
US (1) US2634487A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057032A (en) * 1959-11-27 1962-10-09 Union Carbide Corp Clamp for test specimen
US4827773A (en) * 1988-03-10 1989-05-09 The United States Of America As Represented By The United States Department Of Energy Measuring alignment of loading fixture
US20090139343A1 (en) * 2007-11-30 2009-06-04 Dynamic Systems, Inc. Specimen grip, having a grip shell, for use in a materials testing machine
US20090139344A1 (en) * 2007-11-30 2009-06-04 Dynamic Systems, Inc. Apparatus for a cam-based jack assembly for use in materials, testing machines and an accompanying method for use therewith

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE285389C (en) *
US273195A (en) * 1883-02-27 Tube-clamp for oil-wells
US600535A (en) * 1898-03-15 William c
US675047A (en) * 1901-02-26 1901-05-28 William Henry Macgarvey Casing-clamp.
US749732A (en) * 1904-01-19 Consin
US824000A (en) * 1905-11-13 1906-06-19 John K Elmer Vise.
US920820A (en) * 1905-08-30 1909-05-04 Edward J Brown Elevator safety-lock.
US1051585A (en) * 1912-01-23 1913-01-28 Benjamin F Hiniker Means for holding pipe.
US1127066A (en) * 1914-03-21 1915-02-02 Charles Dickinson Combined casing and tubing tongs and holder.
US1292930A (en) * 1918-09-07 1919-01-28 Paul Otto Unger Vise.
US1566006A (en) * 1923-08-25 1925-12-15 Benjamin F Hiniker Pipe spider
US1692398A (en) * 1926-01-02 1928-11-20 Weaver Mfg Co Vise
US1762037A (en) * 1926-10-23 1930-06-03 Lory J Mildren Pipe holder and elevator
US1837990A (en) * 1929-09-26 1931-12-22 Herbert C Otis Well tubing snubber
US1981304A (en) * 1927-01-08 1934-11-20 City Fokko Brandt Kansas Rod or pipe clamp
US1982482A (en) * 1934-06-27 1934-11-27 Harry L Rhodes Rod spider
GB482984A (en) * 1937-03-19 1938-04-08 William Lindsay Hamilton Improvements in rope sockets or capels
US2114305A (en) * 1936-07-09 1938-04-19 Sullivan Machinery Corp Chuck mechanism
US2173079A (en) * 1937-04-09 1939-09-12 Moody Gertia Opal Spider
US2417478A (en) * 1941-02-20 1947-03-18 Hydraulic Dev Corp Inc Clamp for stretching presses
US2462536A (en) * 1943-11-02 1949-02-22 Muter Arthur John Parallel jaw pliers

Patent Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE285389C (en) *
US273195A (en) * 1883-02-27 Tube-clamp for oil-wells
US600535A (en) * 1898-03-15 William c
US749732A (en) * 1904-01-19 Consin
US675047A (en) * 1901-02-26 1901-05-28 William Henry Macgarvey Casing-clamp.
US920820A (en) * 1905-08-30 1909-05-04 Edward J Brown Elevator safety-lock.
US824000A (en) * 1905-11-13 1906-06-19 John K Elmer Vise.
US1051585A (en) * 1912-01-23 1913-01-28 Benjamin F Hiniker Means for holding pipe.
US1127066A (en) * 1914-03-21 1915-02-02 Charles Dickinson Combined casing and tubing tongs and holder.
US1292930A (en) * 1918-09-07 1919-01-28 Paul Otto Unger Vise.
US1566006A (en) * 1923-08-25 1925-12-15 Benjamin F Hiniker Pipe spider
US1692398A (en) * 1926-01-02 1928-11-20 Weaver Mfg Co Vise
US1762037A (en) * 1926-10-23 1930-06-03 Lory J Mildren Pipe holder and elevator
US1981304A (en) * 1927-01-08 1934-11-20 City Fokko Brandt Kansas Rod or pipe clamp
US1837990A (en) * 1929-09-26 1931-12-22 Herbert C Otis Well tubing snubber
US1982482A (en) * 1934-06-27 1934-11-27 Harry L Rhodes Rod spider
US2114305A (en) * 1936-07-09 1938-04-19 Sullivan Machinery Corp Chuck mechanism
GB482984A (en) * 1937-03-19 1938-04-08 William Lindsay Hamilton Improvements in rope sockets or capels
US2173079A (en) * 1937-04-09 1939-09-12 Moody Gertia Opal Spider
US2417478A (en) * 1941-02-20 1947-03-18 Hydraulic Dev Corp Inc Clamp for stretching presses
US2462536A (en) * 1943-11-02 1949-02-22 Muter Arthur John Parallel jaw pliers

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057032A (en) * 1959-11-27 1962-10-09 Union Carbide Corp Clamp for test specimen
US4827773A (en) * 1988-03-10 1989-05-09 The United States Of America As Represented By The United States Department Of Energy Measuring alignment of loading fixture
US20090139343A1 (en) * 2007-11-30 2009-06-04 Dynamic Systems, Inc. Specimen grip, having a grip shell, for use in a materials testing machine
US20090139344A1 (en) * 2007-11-30 2009-06-04 Dynamic Systems, Inc. Apparatus for a cam-based jack assembly for use in materials, testing machines and an accompanying method for use therewith
WO2009073091A1 (en) * 2007-11-30 2009-06-11 Dynamic Systems, Inc. Apparatus for a cam-based jack assembly for use in materials testing machines and an accompanying method for use therewith
US7793553B2 (en) 2007-11-30 2010-09-14 Dynamic Systems, Inc. Specimen grip, having a grip shell, for use in a materials testing machine
US7827868B2 (en) 2007-11-30 2010-11-09 Dynamic Systems, Inc. Apparatus for a cam-based jack assembly for use in materials, testing machines and an accompanying method for use therewith

Similar Documents

Publication Publication Date Title
US2147800A (en) Work holder
US1823537A (en) Vise
US2634487A (en) Pivoted test clamp
US2447660A (en) Wedge grip for tensile testing machines
US2468395A (en) Gauge for grinding machines
US2431021A (en) Thread checking comparator gauge
US2764380A (en) Support
US1863673A (en) Indicator jaw gauge
CN209763968U (en) Checking fixture for lower shield of automobile steering column
US1890923A (en) Test piece support for hardness testers
US2600923A (en) Test clamp for test specimen
US2059740A (en) Vernier caliper
US1604100A (en) Pipe vise and graduated clamping jaws therefor
US2412569A (en) Taper gauge
CN210198317U (en) Laser measuring device for machining center
US2256030A (en) Combination vernier caliper, depth gauge, and height gauge
US2148156A (en) Combined parallel work support and clamp
US2563440A (en) Thickness gauge
US2908163A (en) Specimen grips
CN210119355U (en) Plane closing device convenient to measure accuracy
US3040434A (en) Rotatable work table
US2473935A (en) Independent leverage chuck
CN219641135U (en) Force measuring tool for magnetic steel in different shapes
US2002495A (en) Apparatus for the determination of brinell-numbers
CN211276352U (en) Positioning device for processing electronic device