CN1005698B

CN1005698B - Adjustable hand tools with clips

Info

Publication number: CN1005698B
Application number: CN88100654.8A
Authority: CN
Inventors: 布里尔·萨迪尤斯·布尔尼
Original assignee: Petersen Manufacturing Co Inc
Current assignee: Petersen Manufacturing Co Inc
Priority date: 1987-02-25
Filing date: 1988-02-08
Publication date: 1989-11-08
Also published as: DE3805571A1; KR880009735A; ZA879714B; NZ221781A; CN88100654A; DE3805571C2; GB8801118D0; KR900007501B1; IT1219799B; IN171789B; DK1688A; DK1688D0; GB2201370A; FR2611160A1; FR2611160B1; JPS63207567A; CA1296204C; IT8847537A0; DK168594B1; BR8800071A

Abstract

A novel hand tool with a clamp is provided with an adjustable claw and a movable claw, the gap between the two claws can be infinitely adjusted, and the hand tool can be operated by only one hand. It comprises the following components 1, a movable jaw and an adjustable jaw which are corresponding to each other. 2 a fixed handle and a movable handle with an adjusting element, a clamping rod is arranged between the fixed handle and the movable handle to keep the stable relation between the two jaws when the jaws are closed. 3 the fixed long rod is intersected with the fixed handle to form a fixed angle. 4 connecting sheets for supporting the movable clamp claws and enabling the movable clamp claws to move along the long rod; there is also an element to fix the movable jaw to any position of the long rod.

Description

Adjustable hand tool with clamp

The present invention relates generally to hand tools with clips and, more particularly, to hand pliers with clips. Has an adjustable jaw and a movable jaw connected to a fixed long rod. The long rod is connected with a fixed handle, and the long rod can be replaced at will. And a movable handle pivotally connected to the adjustable jaw. The movable handle is provided with a release rod which can adjust a four-pivot clamping mechanism.

The jaw end structure of the novel hand tool with the clamp and the movable jaw and the adjustable jaw can be arc-shaped, linear, long-mouth-shaped or C-shaped, and can be connected with a puncher, a wire cutter or take any other forms.

Pliers-shaped hand tools with jaws are commonly used with wrenches and pliers. These conventional tools generally include a fixed handle fixedly connected to the fixed jaw and rotatably connected to the movable jaw, a movable handle rotatably connected to the movable jaw, and a connecting rod rotatably connected to the movable handle and extending into a cavity in the fixed handle to reach an adjustment point. The release lever of the crank catch is normally mounted in a rotary manner in a groove of the movable handle. The hand tool with crank clips has the following patents: (see the text later on)

Commonly used hand tools with jaws include a variety of jaws, for example, U.S. patent 2,641,149 is C-shaped, U.S. patent 3,192,804 is lock-shaped, U.S. patent 4,541,312 and 4,546,680 is long nose pliers, U.S. patent 2,201,918 and 2,280,005 is straight, U.S. patent 2,563,267 and 2,853,910 is curved, U.S. patent 2,590,031 is wire cutter, and U.S. patent 2,563,267 is circumflex. And also a puncher with a clip.

The novel structure of the invention can be applied to the hand tools of the types mentioned above or any other form of hand tool with a card. All these tools have a common basic function of clamping, gripping and clamping the workpiece during adjustment and calibration by pinching the movable handle with the fixed handle. The crank catch can be released by means of a release lever, as is the case with all the hand tools mentioned above.

Us patent 4,553,305 is a scoring and pitch tool for plumbers, containing a complex set of static adjusters.

U.S. patent 4,480,059 is a clamping and pitch tool having a pair of jaws and spacers for maintaining the spacing.

Us patent 4,344,215 is a tool for plumbers, one jaw being controlled by a movable handle and a U-shaped fixed jaw being adjusted by a screw.

U.S. patent 4,306,345 is a tool for plumbers that contains an integral fitting that is adjusted by spacers and screws.

Us patent 4,083,548 is an adjustable clamp with two jaws mounted on a common rod.

U.S. patent No. 3,836 is a toothed frame containing jaws and pivotally connected clamping arms.

U.S. patent 3,241,410 is an adjustable pawl mounted on a ratchet movable long rod.

U.S. patent 3,092,378 is a C-clamp parallel to the main frame.

All eight of the above patents contain some sort of crank clamping mechanism.

The primary object of the present invention is to provide a pliers-type hand tool with a clamp wherein the gap between the two jaws is adjusted by means of a novel movable jaw mounted on a long bar and a conventional adjustable jaw.

It is a further object of the present invention to provide a pliers-type hand tool with a clip wherein the gap between the jaws is at least partially variable by gravity. Thus, when necessary, the operation can be performed with one hand.

An additional object of the present invention is to employ a long fixed pole whose length is determined according to the convenience of use. The long rod is connected with the movable clamp claw. The angle between the movable jaw and the centre line of the fixed handle can be any value between 45 degrees and 135 degrees.

It is a further object to provide a hand tool with a crank-clamping mechanism having a fastening element mounted thereon so that a fixed elongate rod can be mounted on the fixed handle and replaced with a different sized elongate rod or a new elongate rod.

It is a further object of the present invention to provide a hand tool movable jaw with a support member and a pushing member which allows the movable jaw to move in a generally planar and turbulent motion along the shaft and to be fixedly secured to the shaft at any point thereon.

It is also an object of the present invention to provide a stop means on the free end of the long shaft of the hand tool.

It is a further object of the present invention to provide a hand tool with a chuck wherein the jaw ends of the adjustable jaw and the movable jaw may be straight, curved, over-turned, long-nosed, punch, wire cutter, C-clamp or rotating lug, or any other combination.

It is a further object of the present invention to provide indicia on the hand tool to indicate to the manufacturer of the tool.

Still other objects of the invention will not be self-explanatory to the skilled operator.

In order to achieve the above objects of the present invention, a novel crank clamping mechanism is employed, and the tool can be made in the form of a clamp, movable and adjustable in a stepless manner. The tool consists of the following components:

1. a movable jaw and an adjustable jaw corresponding thereto.

2. A fixed handle with an adjustment element and a movable handle with a catch bar therebetween such that when the jaws are closed, the two jaws are held in a stable relationship, the adjustable jaw being pivotally mounted on the fixed handle and the movable handle being pivotally mounted on the adjustable jaw.

3. A long rod, one side of which is smooth and the other side is smooth, is connected with the fixed handle, and the included angle between the two is about 45 degrees to 135 degrees.

4. A support and urging member for moving the movable jaw along the elongate shaft, and a member for fixedly securing the movable jaw at any point on the elongate shaft. Thus, the workpiece can be held and clamped firmly, if desired, with only one hand.

The tool has a slotted tab for holding the movable jaw on one side of the elongate bar and a spacer (preferably circular) on the other side of the elongate bar. The included angle between the long rod and the fixed handle is preferably about 90 degrees.

The bottom end of the movable jaw has an arcuate convex edge with a radius of curvature of about 1/16 inches (1.5 mm) to 7/16 inches (12 mm). Thus, the movable jaw may be clamped and released at any point on the fixed elongate member, and during the transition from clamping to releasing, the angle may vary from about 2 to 8 degrees, preferably about 5 degrees, and the connecting piece holding the movable jaw may be urged by external force or may be automatically moved by gravity.

An adjusting screw is arranged in the cavity of the fixed handle and is matched with the clamping rod to control the position of the adjustable clamp claw.

The adjustable claw and the movable claw are provided with rotary convex discs at the terminals to jointly form a C-shaped structure, and the two claws can be in a linear shape, an arc shape, a thin tooth shape, a spiral wrapping type, a punching type, a long-mouth type line shearing type or any other combination form.

In this new hand tool there is also a release lever which is rotatably connected to the movable handle, a stop member at the free end of the long rod, and fastening elements for attaching the long rod to the fixed handle or for replacing the long rod. The fastening elements are preferably bolts and wing nuts. The tool is marked to indicate the manufacturer of the new tool.

FIG. 1 is a plan view of a mechanism of an embodiment of the present invention.

Figure 2 is a partial view of the fixed elongate bar with the coupling tabs for holding the movable jaws not shown.

The illustration in the drawings represents only one of the various embodiments of the invention. Other embodiments can be made in accordance with the foregoing description. Throughout the drawings, identical or similar elements are denoted by the same reference numerals.

One embodiment of the present invention is shown in FIG. 1 and is generally designated by the numeral 10. The fixed handle 11 is provided with adjustable jaws 12 which are pivotally connected by rivets at pivot points 13. It is also possible to attach the support point or other support points by means of bolts and nuts or by any other suitable means. A movable handle 14 is mounted on the adjustable jaw 12 and is connected thereto by a rivet at a pivot point 15. The catch lever 16 is mounted on the movable handle 14 and is pivotally connected (or connected in some other manner) by a rivet at pivot 17. The catch lever 16 extends into the cavity of the fixed handle 11 and is pressed by an adjusting screw 33, the screw 33 being adjusted by a knurled knob 32. Of course, other forms of adjustment elements and adjustment knobs are possible, such as slotted screws. An extension spring 18 connects the adjustable jaw 12 from tab or aperture 19 to a tab or aperture not visible in the fixed handle 11 (indicated by arrow 20). The release lever 21 is pivotally connected to the free end of the movable handle 14 in a riveted fashion at a pivot point 22.

The fixed elongate rod 23 may take any suitable length, such as 10 inches (25 Cm) or 18 inches (46 Cm). The long rod 23 is fixed to the fixing handle 11 by a nut 24. It should be noted that the fixing by rivets, glue or any other means, the connection by bolts and nuts, easy to detach, is possible, the gluing by cyanoacrylate, difficult to detach, is also possible. Of course, easy disassembly is preferred because it is convenient to change stock of different lengths or to change stock to a new one.

The movable jaw 25 is mounted on a connecting piece 27 and is carried by this piece 27, the two being connected by three rivets 29. Of course, screws, nuts or glue may be used. As can be seen, the rod 23 is slidably received in a slot in the attachment tab 27 and a spacer 28 is mounted on the opposite side of the rod 23 from the attachment tab 27 but opposite the movable jaw. This sheet 28 is shown as being circular. In practice, curved flat shapes are also possible. This tab 28 serves some function, one of which is to maintain the two parallel faces of the slot of the connecting tab 27 in the correct alignment. One of the rivets 29 is preferably located at the geometric center of the spacer 28 near that center.

As shown in FIG. 1, adjustable clamp 12 and moveable jaw 25 form a C-clamp. It is contemplated that other shapes may be used for other purposes, such as straight, curved, long-mouthed, for perforating, for cutting, etc. The terminal ends of the two jaws 25 and 12 cooperate with each other as a pair of rotating flanges 26a and 26 b. It is also contemplated that other types of slotted, serrated, curved, textured, flat, or combinations of types of jaw terminations may be used, as long as the workpiece is clamped. Two studs 30a and 30b are used to limit the length of movement. It should be noted, however, that if several cuts are made, several collars are added, or a weld is added, or other methods are used, the movement of the free end of the long fixing rod 23 can be limited.

The five flat areas marked with the number 31 in the drawing and the screw head or rivet head can be pressed with specific marks, letters, numbers or characters to indicate the manufacturer of the tool of the invention, so as to prevent the manufacturer at home and abroad from counterfeiting.

Designated 40 in figure 2 is a sectional plan view of the elongate bar 23, together with the integral spacer 28 and the terminal end of the movable jaw 25 which is remote from the rotatable lug 26 b. The outer edge of the sliding end of the moveable jaw has an arcuate lip 42 with a radius of curvature of about 1/16 inches (1.5 mm) to 7/16 inches (12 mm), although 3/16 inches (5 mm) is preferred. When the movable jaw 25 is free to slide along the long rod 23 by gravity or pushed to any position by the user, the jaw sliding end can be shifted from the clamping position 25a to the release position 25b by the flange 42. The clearance angle 41 resulting from this change in position is from about 2 to about 8 degrees, but is preferably about 5 degrees.

Although fig. 1 and 2 have been described in detail with respect to the invention, various changes in the form, size, arrangement of parts and combination of parts may be made which are also within the scope of the invention as described in the appended claims.

Watch (A)

Date of issuance of inventor's U.S. patent number

W. petersen 1, 489, 4581924, 4, 18

W. petersen 2, 201, 9181940, 5, 21

W. petersen 2, 280, 0051942, 4, 14

Bosch 2, 299, 4541942, 10, 20

Torrenberg 2, 341, 4891944, 2, 8

W. petersen 2, 417, 0131947, 3, 4

C. Pedson 2, 563, 2671951, 8, 7

C. Petersen 2, 590, 0311952, 3, 18

W, Petersen 2, 711, 6631955, 6, 28

W. petersen 2, 853, 9101958, 9, 30

Hostatt Re.26, 2801964, 1, 7

1967，10，17

C. Pedson Ett 3, 192, 8041965, 7, 6

Ai Er

Schroeder 3, 585, 7041971, 6, 22

Malasco 3, 590, 6691971, 7, 6

Baodewen 3, 600, 9861971, 8, 24

C. Pederson 4, 541, 3121985, 9, 17

C. Petersen 4, 546, 6801985, 10, 15

Claims

1. A hand tool with clamp is composed of an adjustable jaw and another jaw with slide end, a fixed handle and a movable handle, a long rod connected to said fixed handle at a fixed angle, and a unit for supporting and moving said movable jaw along said long rod, and a supporting and moving unit consisting of a slotted supporting unit for holding said movable jaw on one surface of long rod and a isolating unit on another surface of long rod, and features that when said movable jaw is slid or slid to any position on long rod, the sliding end is brought into a clamping or unclamping position wherein the arcuate flange is at an outer corner of the sliding end of the movable jaw such that the arcuate flange, the spacer element and the distance therebetween provide a location for frictionally clamping the movable jaw to the elongated bar.

2. The hand tool with a chuck of claim 1 wherein the support and urging attachment includes a slotted support member for holding the movable jaw and a spacer for holding the movable jaw in opposing contact with a side of the elongate shaft.

3. The hand tool of claim 1, wherein the sliding end of the movable jaw is arcuate with a radius of curvature of 1/16 inches (1.5 mm) to 7/16 inches (12 mm) to allow the movable jaw to be secured to the fixed length bar at any point.

4. A hand tool with a card as in claim 1 wherein the spacer used is circular.

5. The hand tool of claim 1, wherein the angle between the elongate retention bar and the retention handle is about 90 degrees.

6. The hand tool of claim 1, wherein the fixed length is about 10 inches (25 Cm) in length.

7. The hand tool of claim 1, wherein the fixed length is approximately 18 inches (46 Cm) in length.

8. A hand tool with a chuck according to claim 1 in which the contact end surfaces of the two jaws are arcuate.

9. A hand tool with a chuck according to claim 1 in which the contact end of the two jaws is provided with a rotating lug.

10. The hand tool of claim 1, wherein the lever means comprises a release member.

11. The hand tool of claim 10, wherein the catch lever is a release lever positioned within an internal recess of the movable handle.

12. The invention of claim 1 wherein the angle between the elongated rod and the stationary handle is fixed and held by a fastening member, the elongated rod being removable and replaceable.

13. The hand tool of claim 12, wherein the fastening member is a bolt and a wing nut.

14. The hand tool of claim 1, wherein there is a marking comprising a manufacturer of the tool.

15. The hand tool of claim 13, wherein there is a marking comprising a manufacturer of the tool.

16. The hand tool of claim 1, wherein the free end of the elongated shaft has a stop member for preventing the movable jaw from sliding out of engagement.

17. A hand tool with a chuck according to claim 1 wherein the movable jaw and the adjustable jaw form a C-clamp.

18. The hand tool of claim 1, wherein the fixed handle has attached thereto an element for effecting stepless adjustment of the adjustable jaw.

19. The hand tool of claim 18, wherein the clamping condition is determined by a clamp having a clamping bar that cooperates with an adjustment member on the stationary handle to adjust the adjustable jaw.

20. The hand tool of claim 1, wherein the sliding end of the movable jaw is angled relative to the elongated shaft as the jaw is moved along the elongated shaft between said clamping and release positions.

21. The hand tool of claim 20, wherein said included angle is between about 2 ° and about 8 °.