US443766A - Apparatus for cutting altar-bread or wafers - Google Patents

Apparatus for cutting altar-bread or wafers Download PDF

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US443766A
US443766A US443766DA US443766A US 443766 A US443766 A US 443766A US 443766D A US443766D A US 443766DA US 443766 A US443766 A US 443766A
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cutter
cutting
bearing
tubular
tubular cutter
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
    • B23Q1/28—Means for securing sliding members in any desired position
    • 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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
    • Y10T408/561—Having tool-opposing, work-engaging surface
    • 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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
    • Y10T408/561—Having tool-opposing, work-engaging surface
    • Y10T408/5628—Tool having screw-thread engaging frame to cause infeed
    • 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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
    • Y10T408/564—Movable relative to Tool along tool-axis
    • Y10T408/5653—Movable relative to Tool along tool-axis with means to bias Tool away from work
    • 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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/65—Means to drive tool
    • Y10T408/675—Means to drive tool including means to move Tool along tool-axis
    • Y10T408/6786—Manually moved 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
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/895—Having axial, core-receiving central portion

Definitions

  • PATRICK II IIORAN, OF BOSTON, MASSACHUSETTS.
  • This invention relates to machines for cutting out disks from a sheet of material, such as altar-bread; Yand it has for its object to providel a machine of simple construction which shall be capable of cutting out such disks expeditiously and without breaking or cracking the material, thus giving the disks a perfect form with unbroken edges.
  • the invention consists in the improved apparatus, which I will now proceed to describe and claim.
  • Figure l represents a front elevation of my improved apparatus.
  • Fig. 2 represents a section on line 2 2 of Fig. 1, looking toward the left, the dotted lines showing the position of the cutter and frame when swung or reversed.
  • Fig. 3 is a section on line 3 3, Fig. 1, looking to the left.
  • Fig. It represents a section on line 4. 4 of Fig. 3.
  • a represents the bed of the machine, having an upright or standard b at each end thereof.
  • c is a tubular cutter, having a cutting-edge c at its lower end.
  • the tubular cutter c is journaled in a support or bearing d, which is supported by two trunnions e, which are journaled in bearings at the upper portion of the standards b b.
  • the tubular cutter c is provided with a handle f, which is firmly affixed to the periphery of said cutter and projects substantially at right angles to the axis thereof through an inclined slot g in the bearing d, as shown in Fig. l.
  • the cutter c is adapted to rotate easily'in its bearing d, and may be caused so to rotate by pushing the handle f in the direction indicated by the arrow in Fig. l. lVhen the handle f is moved in this direction, the upper edge of the inclined slot g will act as a cam upon its upper surface and will force the tubular cutter downwardly.
  • the tubular cutter has a double movement, as it rotates upon its own axis at the same time that it is moving downwardly in a line therewith.
  • the cutter is thus enabled to cut out the disks of material, and thereby give said disks a clean unbroken edge, this being a great improvement over a mere stamping out by a single vertical movement.
  • the cutter is forced downwardly by the action of the handle above described, it is moved against the stress of the spring h, and when the handle is released after such downward movement the spring h forces the cutter upwardly, and the handle, being acted upon by the lower edge of the inclined slot g, necessarily retires to its normal position.
  • the tubular cutter c is of the same bore or inside diameter throughout its length, and the disks as they are cut pass upwardlyinto the interior of the cutter, each successive disk pressing those previously cut farther up into the tube portion of the cutter.
  • the trunnions e e supporting the bearing CZ, are journaled in bearings in the standards b b, so that they can rotate freely on their own common axis.
  • One of said trunnions is provided at its end close to one of the standards b with an ear or lug i.
  • the adjacent standard b is provided with a stop j, arranged to co-operate with the ear t', so that when the ear 1I strikes the stop j the apparatus will be in its operative position. (Shownin Fig. l.)
  • the machine is locked in this posit-ion by means of a pin 7c, running through the standard Z) and entering Said pin is connected to a hole in the ear t.
  • a lever n1 which is pivotcd at o to an car or bracket on the outer side of the standard Z1, and is connected at its other end to one end of a spring p.
  • the other end of said spring p is connected to the standard b, and the said spring acts to keep the pin 7c' in its locking position, as shown in Fig. l. Vhen it is desired to tip the cutter and its supporting bearing on the axis of the trunnions c c, the lower end of the lever m is pressed inwardly, and the pin 7o is thereby withdrawn from the lug or ear i'.
  • the ear or lug t' has its rear edge nearest to the adjacent'standard l) beveled off at a point in line with the hole therein, which is entered by the locking-pin 7.-, so that when the cutter and its supportingframe are swung back to their normal or operative position the end of the spring-pressed pin 7,; will strike the bevel and will be forced outwardly by the rearward movementof the lug 17 until the cutter and its frame reach their operative position, when the pin 7c will coincide with the hole formed therefor in the ear or lug i, and will be pressed thereinto by the spring p, acting through the lever m, thus locking the cutter-frame in its operative position.
  • t is a cutting surface or bed, which is preferably formed of a piece of soft metal, resting in a recess formed for it in the centerof the bed d of the machine, and is adjustable, so that it may be fixed in the same horizontal plane as the cutting-edge c of the tubular cutter.
  • This adjustment of the cutting surface or bed t is effected by three adjustingscrews t in the under surface of the central part of the bed d.
  • the cutting surface or bed t is adjusted to thc desired plane by means of said screws t', and is then iixed in that posit-ion by tightening up the central screw t2, which fastens the cutting surface or bed t to the bed a of the machine.
  • the cutting-odge of the tubular cutter may be readily sharpened by tipping or swinging the cutter and its frame, as above described, and then applying an oilstone to the cuttingedge c.
  • An apparatus forcutting out disks from a sheet of material consisting of a tubular cutter, a bearing for the same in which said tubular cutter is adapted to rotate and to move endwise, said bearing having an inclined slot, ahandle attached to the periphery of the tubular cutter and projecting through the said inclined slot, the said slot acting as a cam on said handle, so that when the latter is moved to rotate the tubular cutter the slot will at the same time cause the cutter to move endwise in its bearing, and a bed or table adapted to support the material to be cutandV upon which the tubular cutter is arranged to descend, as set forth.
  • An apparatus for cutting out disks ⁇ from a sheet of material consisting of a tubular cutter, a bearing for the same in which said tubular cutter is adapted to ⁇ rotate and t0 move endwise, said bearing having an inclined slot, a handle attached to the periphery of the tubular cutter and projecting through the said inclined slot, the said slot acting as a cam on said handle, so that when the latter is moved to rotate the tubular cutter the slot will at the same time cause the cutter to move endwise in its bearing, a spring interposed between the tubular cutter and its bearing, whereby the cutter is automaticallyreturned to its normal position after each endwise and rotary movement caused by the handle and inclined slot, and a bed or table adapted to support the material to be cut and upon which the tubular cutter is arranged to de scend, as set forth.
  • a tubular cutter having a cutting-edge at one end, a bearing for the same in which said tubular cutter is adapted to rotate andto move endwise, said bearing being provided with trunnions, which are ⁇ journaled in suitable bearings and upon which the bearing is adapted to swing to reverse the cutter, so that easy access may be had to the interior thereof, said bca-ring also having an inclined slot, a handle attached to the periphery of the tubular cutter and projecting through the said inclined slot, the said slot acting as a cam on said handle, so that when the latter is moved to rotate the tubular cutter the slot will at the same time cause the cutter to move endwise in its bearing, a spring interposed between the tubular cutter and its bearing, whereby the cutter is automatically returned to its normal position after each endwise and rotary movement caused bythe handle and inclined slot, and a ⁇ bedor table adapted to support the material to be cut and upon which the tubular cuttcris arranged to
  • a tubular cutter having a cutting-edge at one end
  • a bearing for the same in which said tubular cutter is adapted to rotate and to move endwise
  • said bearing being provided with trunnions, which are journaled in suitable bearings and upon which the bearing is adapted to swing to reverse the cutter, so that easy access may be had to the interior thereof
  • said bearing also having an inclined slot, a handle attached to the periphery of the tubular cutter and projecting through the said inclined slot, t-he said slot acting as a cam on said handle, so that when the latter is moved to rotate the tubular cutter the slot will at thevsam'e time cause the cutter to move endwise in its bearing, a spring interposed between the tubular cutter and its bearing, whereby the cutter is automaticallyreturned to its normal position after each rotary and endwise movement caused by the handle and inclined slot, a locking device whereby the supporting frame and bearing of the tubular cutter is automatically locked in its normal or operative position
  • a spring interposed between the said tubular cutter and its bearing, a locking device comprising the ear or lug ⁇ t on one of the trunnions and the springpressed pin 70, (3o-operating therewith, and a cutting surface or bed t, set in the central portion of the bed a of the machine and adjustable thereon so as to bring the said cutting-surface t into the same horizontal plane as the cutting-edge c of the cutter c, all arranged and operating substantially as set set forth.

Description

(No Model.)
P. H. HORAN. APPARATUS FOR CUTTING ALTAR BREAD 0R WATERS. No. 448,766.
minus' Patented Deo. 30, 1890.
UNITED STATES ATENT trice.
PATRICK II. IIORAN, OF BOSTON, MASSACHUSETTS.
APPARATUSl FOR CUTTING ALTAR-BREAD OR WAFERS.
SPECIFICATION forming part of Letters Patent No. 443,766, dated December 30, 1890.
Application filed September 1'7, 1890. Serial No. 365,270. (No model.)
To all whom it may concern:
Be it known'that I, PATRICK H. HORAN, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Apparatus for'Out.- ting Altar-Bread or Vat'ers, of which the'following is a specification.
This invention relates to machines for cutting out disks from a sheet of material, such as altar-bread; Yand it has for its object to providel a machine of simple construction which shall be capable of cutting out such disks expeditiously and without breaking or cracking the material, thus giving the disks a perfect form with unbroken edges.
The invention consists in the improved apparatus, which I will now proceed to describe and claim.
Of the accompanying drawings, forming a part of this specification, Figure l represents a front elevation of my improved apparatus. Fig. 2 represents a section on line 2 2 of Fig. 1, looking toward the left, the dotted lines showing the position of the cutter and frame when swung or reversed. Fig. 3 is a section on line 3 3, Fig. 1, looking to the left. Fig. It represents a section on line 4. 4 of Fig. 3.
The same letters of reference indicate the same parts in all the figures. l
In the drawings, a represents the bed of the machine, having an upright or standard b at each end thereof.
c is a tubular cutter, having a cutting-edge c at its lower end. The tubular cutter c is journaled in a support or bearing d, which is supported by two trunnions e, which are journaled in bearings at the upper portion of the standards b b.
The tubular cutter c is provided with a handle f, which is firmly affixed to the periphery of said cutter and projects substantially at right angles to the axis thereof through an inclined slot g in the bearing d, as shown in Fig. l. The cutter c is adapted to rotate easily'in its bearing d, and may be caused so to rotate by pushing the handle f in the direction indicated by the arrow in Fig. l. lVhen the handle f is moved in this direction, the upper edge of the inclined slot g will act as a cam upon its upper surface and will force the tubular cutter downwardly. By this means it will be seen that the tubular cutter has a double movement, as it rotates upon its own axis at the same time that it is moving downwardly in a line therewith. The cutter is thus enabled to cut out the disks of material, and thereby give said disks a clean unbroken edge, this being a great improvement over a mere stamping out by a single vertical movement.
To raise the tubular cutter c so that its cutting edge c will be clear of the material, it is necessary that the handle f should be brought back to the position shown in Fig. l; and to this end I provide a spiral spring h, adapted to automatically cause the return of the cutter to its normal position. Shown in said iigure.) This spring his wound around the eX- terior of the tubular cutter, which is shouldered to aord a bearing for the upper end of the spring, the lower end of said spring bea-ring against an internal shoulder in the lower part of the bearing d, as shown in Fig. 2. Vhen the cutter is forced downwardly by the action of the handle above described, it is moved against the stress of the spring h, and when the handle is released after such downward movement the spring h forces the cutter upwardly, and the handle, being acted upon by the lower edge of the inclined slot g, necessarily retires to its normal position. (Shown in' Fig. l.) The tubular cutter c is of the same bore or inside diameter throughout its length, and the disks as they are cut pass upwardlyinto the interior of the cutter, each successive disk pressing those previously cut farther up into the tube portion of the cutter.
It is of course at times desirable to empty the tube portion of the cutter of itscontents, andin order to facilitate this operation I have arranged the apparatus as follows: The trunnions e e, supporting the bearing CZ, are journaled in bearings in the standards b b, so that they can rotate freely on their own common axis. One of said trunnions is provided at its end close to one of the standards b with an ear or lug i. The adjacent standard b is provided with a stop j, arranged to co-operate with the ear t', so that when the ear 1I strikes the stop j the apparatus will be in its operative position. (Shownin Fig. l.) The machine is locked in this posit-ion by means of a pin 7c, running through the standard Z) and entering Said pin is connected to a hole in the ear t.
IOO
one end of a lever n1, which is pivotcd at o to an car or bracket on the outer side of the standard Z1, and is connected at its other end to one end of a spring p. The other end of said spring p is connected to the standard b, and the said spring acts to keep the pin 7c' in its locking position, as shown in Fig. l. Vhen it is desired to tip the cutter and its supporting bearing on the axis of the trunnions c c, the lower end of the lever m is pressed inwardly, and the pin 7o is thereby withdrawn from the lug or ear i'. The ear or lug t' has its rear edge nearest to the adjacent'standard l) beveled off at a point in line with the hole therein, which is entered by the locking-pin 7.-, so that when the cutter and its supportingframe are swung back to their normal or operative position the end of the spring-pressed pin 7,; will strike the bevel and will be forced outwardly by the rearward movementof the lug 17 until the cutter and its frame reach their operative position, when the pin 7c will coincide with the hole formed therefor in the ear or lug i, and will be pressed thereinto by the spring p, acting through the lever m, thus locking the cutter-frame in its operative position.`
\Vl1en the cutter and supporting frame are swung on the axis of the trunnions e e, the upper part of the cutter may be swung backwardly until a stop or lug q on one trunnion e strikes the stopj on one of the standards b. rWhen in this position, the cutting-edge c of the tubular cutter will be uppermost, and the tube portion of the cutter may be cleared of its contents by the use of a pin r, having a knob r at one end. Said pin r is used to force out the contents of the tubular cutter by pressing the knob fr on the last disk at the cutting end of the cutter, thereby forcing the contents of the cutter out at the other end.
In the drawings I have shown the pin fr as passing through a hole in one of the trunnions` c and then passing into a hole in a bracket son one of the standards Z1. In this position it forms an additional lockingdevice for the cutter and its supporting-frame; but I do not limit myself to this construction. Then the pin yr is to be used for forcing out the contents of the tubular cutter, it isof course withdrawn from the holes in which it is shown in Fig. l.
t is a cutting surface or bed, which is preferably formed of a piece of soft metal, resting in a recess formed for it in the centerof the bed d of the machine, and is adjustable, so that it may be fixed in the same horizontal plane as the cutting-edge c of the tubular cutter. This adjustment of the cutting surface or bed t is effected by three adjustingscrews t in the under surface of the central part of the bed d. The cutting surface or bed tis adjusted to thc desired plane by means of said screws t', and is then iixed in that posit-ion by tightening up the central screw t2, which fastens the cutting surface or bed t to the bed a of the machine.
The cutting-odge of the tubular cutter may be readily sharpened by tipping or swinging the cutter and its frame, as above described, and then applying an oilstone to the cuttingedge c.
I claim- I. An apparatus forcutting out disks from a sheet of material, consisting of a tubular cutter, a bearing for the same in which said tubular cutter is adapted to rotate and to move endwise, said bearing having an inclined slot, ahandle attached to the periphery of the tubular cutter and projecting through the said inclined slot, the said slot acting as a cam on said handle, so that when the latter is moved to rotate the tubular cutter the slot will at the same time cause the cutter to move endwise in its bearing, and a bed or table adapted to support the material to be cutandV upon which the tubular cutter is arranged to descend, as set forth.
2. An apparatus for cutting out disks `from a sheet of material, consisting of a tubular cutter, a bearing for the same in which said tubular cutter is adapted to `rotate and t0 move endwise, said bearing having an inclined slot, a handle attached to the periphery of the tubular cutter and projecting through the said inclined slot, the said slot acting as a cam on said handle, so that when the latter is moved to rotate the tubular cutter the slot will at the same time cause the cutter to move endwise in its bearing, a spring interposed between the tubular cutter and its bearing, whereby the cutter is automaticallyreturned to its normal position after each endwise and rotary movement caused by the handle and inclined slot, and a bed or table adapted to support the material to be cut and upon which the tubular cutter is arranged to de scend, as set forth.
In an apparatus for cutting out disks from a sheet of material, the combination of a tubular cutter having a cutting-edge at one end, a bearing for the same in which said tubular cutter is adapted to rotate andto move endwise, said bearing being provided with trunnions, which are `journaled in suitable bearings and upon which the bearing is adapted to swing to reverse the cutter, so that easy access may be had to the interior thereof, said bca-ring also having an inclined slot, a handle attached to the periphery of the tubular cutter and projecting through the said inclined slot, the said slot acting as a cam on said handle, so that when the latter is moved to rotate the tubular cutter the slot will at the same time cause the cutter to move endwise in its bearing, a spring interposed between the tubular cutter and its bearing, whereby the cutter is automatically returned to its normal position after each endwise and rotary movement caused bythe handle and inclined slot, and a `bedor table adapted to support the material to be cut and upon which the tubular cuttcris arranged to descend, as set forth.
IOC
IIC
4. In a machine for cutting out disks from a sheet of material, the combination of a tubular cutter having a cutting-edge at one end, a bearing for the same in which said tubular cutter is adapted to rotate and to move endwise, said bearing being provided with trunnions, which are journaled in suitable bearings and upon which the bearing is adapted to swing to reverse the cutter, so that easy access may be had to the interior thereof, said bearing also having an inclined slot, a handle attached to the periphery of the tubular cutter and projecting through the said inclined slot, t-he said slot acting as a cam on said handle, so that when the latter is moved to rotate the tubular cutter the slot will at thevsam'e time cause the cutter to move endwise in its bearing, a spring interposed between the tubular cutter and its bearing, whereby the cutter is automaticallyreturned to its normal position after each rotary and endwise movement caused by the handle and inclined slot, a locking device whereby the supporting frame and bearing of the tubular cutter is automatically locked in its normal or operative position, and an adjustable cutting surface or bed adapted to support the material to be cut and upon which the tubular cutter is arranged to descend, as set forth.
5. In an apparatus for cutting out disks 4tubular cutter and projecting through the said inclined slot, a spring interposed between the said tubular cutter and its bearing, a locking device comprising the ear or lug` t on one of the trunnions and the springpressed pin 70, (3o-operating therewith, and a cutting surface or bed t, set in the central portion of the bed a of the machine and adjustable thereon so as to bring the said cutting-surface t into the same horizontal plane as the cutting-edge c of the cutter c, all arranged and operating substantially as set set forth.
In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses, this 16th day of September, A. D. 1890.
PATRICK lil. HORAN.
Witnesses:
C. F. BROWN, A. D. HARRISON.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788070A (en) * 1954-02-11 1957-04-09 United Shoe Machinery Corp Presses for cutting blanks from sheet material
US20090145520A1 (en) * 2006-10-06 2009-06-11 Black & Decker Inc. Joist drill
US20110011233A1 (en) * 2006-03-31 2011-01-20 Seiko Ltd. Sheet hole punching appratus
US20120297951A1 (en) * 2006-03-31 2012-11-29 Seiko Ltd. Sheet hole punching device
US20120297950A1 (en) * 2006-03-31 2012-11-29 Seiko Ltd. Sheet hole punching device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788070A (en) * 1954-02-11 1957-04-09 United Shoe Machinery Corp Presses for cutting blanks from sheet material
US20110011233A1 (en) * 2006-03-31 2011-01-20 Seiko Ltd. Sheet hole punching appratus
US8291802B2 (en) * 2006-03-31 2012-10-23 Seiko Ltd. Sheet hole punching apparatus
US20120297951A1 (en) * 2006-03-31 2012-11-29 Seiko Ltd. Sheet hole punching device
US20120297950A1 (en) * 2006-03-31 2012-11-29 Seiko Ltd. Sheet hole punching device
US8770079B2 (en) * 2006-03-31 2014-07-08 Seiko Ltd. Sheet hole punching device
US8770078B2 (en) * 2006-03-31 2014-07-08 Seiko Ltd. Sheet hole punching device
US20090145520A1 (en) * 2006-10-06 2009-06-11 Black & Decker Inc. Joist drill
US7708505B2 (en) 2006-10-06 2010-05-04 Black & Decker Inc. Joist drill

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