US1390726A - Shears-grinder - Google Patents

Shears-grinder Download PDF

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US1390726A
US1390726A US33161319A US1390726A US 1390726 A US1390726 A US 1390726A US 33161319 A US33161319 A US 33161319A US 1390726 A US1390726 A US 1390726A
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frame
screw
carriage
pivoted frame
pivoted
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Albert T Scheiwer
Ferguson David
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Albert T Scheiwer
Ferguson David
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Priority to US33161319 priority Critical patent/US1390726A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/52Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of shear blades or scissors

Description

A. T SCHEIWER AND D. FERGUSON.
SHEARS GRINDER. 7 APPLICATION HLED OCT. l3, l9l9l Patent-ed Sept. 13, 1921.
2 SHEETS-SHEE] I.
glv mtoms 776: we?
fi mmov- A. T SCHEIWER AND D. FERGUSON.
SHEARS GRINDER.
APPLICATION FILED OCT. 18, 1919 Patented Sept. 13, 1921.
2 SHEETS-SHEET 2- UNITED STATES PATENT OFFICE.
SHEARS-GRINDER.
Specification of Letters Patent. Patentd Sept. 13, 1921,
Application filed October 18, 1919. Serial No. 331,613.
'10 (1]! 107mm it may concern Be it known that we, Annnnr T- So'rrmwnn and DAvin FnnousoN, citizens of the United States, residing at Erie, 1n the county ot- Erie and State of. Pennsylvania, have invented certain new and useful improvements in Shears-(hinders, of which the following is a specification, reference being bad to the accompanying drawings.
This invention relates to an improved shear grinder, and an object of the invention is to provide a device of this kind for sharpening the shear blades either with a corru gated cutting edge or a plain shearing cuttin ed e.
Knotlier object of the invention is the provision of a grinding machine of this character wherein a pivoted frame is employed for supporting a carriage for the support of the shears, and means for manipulating the frame whereby the shear blades maybe provided with a plain shearing cutting edge or a corrugated shearing cutting edge.
A further ob'ect of the invention is to provide a very simple. efiicient and practical machine, which involves novel features of construction.
\Vhile the design and construction at pres' ent illustrated and set forth is deemed preferable, it is obvious that as a result of a reduction of the invention to a more practical form for commercial purposes the invention may be susceptible to changes, and the right to these changes is claimed, provided they are comprehended within the scope. of what is claimed.
The invention comprises further features and combination of parts, as will be l1ereinafter set forth. shown in the drawings and claimed.
In the drawings:
Figure 11. is a plan view of the improved grinder constructed in accordance with the invention, showing a pair of shears supported upon the carriage;
Fig. 2 is a viewin side elevation of a grinder;
Fig. 3 is an endview of the machine; and 5 Fig. 4 is a sectional view on the line 4-4 of Fig. 2.
Referring more especially to the drawings, 1 designates the base of the machine, and rising upwardly from its opposite ends are standards or uprights 2. which carry the pivot pins 4. The base 1 is formed with a laterally projecting. portion 5, constituting a base or support for a conventional form of motor 6, which may receive current from any suitable source of electrical supply. The
shaft of the motor 6 has mounted thereon a grinding stone 7 able material. I
Mounted upon the pivot )ins 4 is a U- shapcd oscillatory frame 8 through the depending arms 9 of which the pivot pins 4 extend. The upper elongated part 10 of the oscillatory frame 8 is provided with beveled edges 11 converging downwardly. A carriage 12 is mounted upon the elongated portion 10 of the oscillatory frame 8 and is provided with converging oppositely arranged beveled edges 13 cooperating with the edges .11, whereby a dominant carriage 12 may be guided upon the elongated part 10 ofthe frame 8. A gib 1.4 is interposed between certain of the beveled edges 11 and 13 in order to insure a proper fit of the carriage on the elongated part 10 of the frame 8. By means of suitable screws 15, the gib 14 may be adjusted, and held in position in order to prevent excessive binding, as the carriage is guided. The elongated part 10 of the frame 8has an elongated guide slot 16 and extending downwardly through the slot is an arm 17, which is carried by and depends from a dominant carriage 12.
A screw 18 is mounted in bearings 19 of the depending parts of the pivoted frame 8, and threads through the depending arm 17 of the ca rriagc 12. A collar 20 is secured by means of the pin 21 on one end of the screw 18 and cooperates with one of the depending parts of the frame 8 to prevent longitudinal movement of the screw in one direction. A. hexagonal cam collar 22 is secured by means of a transverse pin 23 on the other end of the screw. and cooperates with the other depending part of the frame 8 to prevent axial movement of the screw in the opposite direction. In other words, the screw 18 is .swivelly mounted on the depending parts of of emery or any other suitinwardly converging beveled guides 31 an auxiliary carriage 'that the carriage 12 moves longitudinally which the hexagonal cam collar 22 cooperates, in order to vibrate the frame 8 back and forth. A plate 26 1s secured by screws 7 27 on one end of the upright at one end of the-base, and is provided with a concavity 28. One of the depending parts 9 of the oscillatory frame 8 on one of itsedges is provided with a concavity 29. Engaging the eoncavities 28 and 29 and interposed between one of the depending parts 9 of the frame 8 and the plate 26 is a coiled expansi'on spring 80 .the action of which holds the oscillatory frame i' such wise that the hexagonal cam collar 22 will at all times engage the edge of the pro]ect1on 24 of one of w 1ich are engaged bythe beveled edges 32 of the dove-tailed depending piece 33 of it will be noted upon the frame 8 in a'direction parallel with the, screw, while the. auxiliary carriage 3d .moves in a horizontal, direction at right angles to the movement of the dominant carriage 12 By these movements of the carriages, it is possible to move the shears in a direction atright angles to the grinding surface of the emery stone. and also move the cutting edge of a blade of the shears toward and from the'grinding surface of p the emery stone,
the cooperating beveled edges'31 and A gib is arranged between certain of so 0.; in order to insure proper guiding of he auxiliary carriage, that is to say, 1n such wise as to prevent undue binding of the parts. By virtue of suitable screws 36 which are mounted in the dominant carriage 12.
the gib may be adjusted in position i 'r iis' lr- A'plate 37 18 secured by means of screws 38 on one of the edges of the dominant carriage 12, and swivelly mounted in an up 'wardly projecting portion of the plate is a head 41 (which .is scoured to the screw by screw 39. Bymeans of a collar l0 and the the pin- 42) of the screw, said screw is mounted swivelly in the projecting part of the plate This screw has threaded engageinent with the carriage 34, therefore itis obvious that when the screw is rotated in one direction or the other, the auxiliary carriage may be moved in a direction at right angles to the movement of the dominant carriage 12. When the auxiliary carriage is moved in such a direction, the shears to be sharpened will be moved toward and from the grinding stone.
The upper face of the auxiliary carriage near one end edge thereof has a slight bevcled portion or bearing 4-3, preferably coir stituting a clamping face. against which either one of the blades of a pair of shears may be clampc h as clearly shown in Figs. 1 and I-hby means of a clamp ii. The clamp l is in the form of a plate and a portion of this plate. adjacent one edge. is arranged at a very slight obtuse angle. This portion of the plate. designated by the numeral l5. forms a clamping fare l-(i in opposed relation to the clamping face 43. that is to say. in parallelisn'i therewith so as to engage the opposite face of the shear blade. The plate or clamp ii has a depending 'l'ulcruming lug 17 adjacent the edge opposite the. bQHCPOI'l lODS -15 of the plate. This lug l7 bears upon the auxiliary carriage. as shown clearly in Fig. 3. A screw 4-8 is carried by the auxiliary carriage in any suitable man nor, and passes upwardly through the clamp or plate 4-1 and is provided with a thumb nut 49. The opening of the plate 44 through which the screw. ib extends is slightly elongated so as to permit of a slight looscilcss or play of the plate. so that by means of the thumb nut d9 the clamping face 46 may be drawn tightly into engagement with the shear blade. thereby holding the shcars firmly in position. The clamping plate ii is cut away as indicated at 50. thereby forming the arms 51. which carry the clamping faces 46.
AS the dominant carriage is moved longitudinally upon the frame R by rotating the screw 18, the frame and the carriage. is given a vibrating IHOYQI'HGIlt. moving the cutting edge of the shear blade in a direction at right angles to the grinding stone. As the edge of the shear blade is being ground. it is obvious that the auxiliary carriage may be moved in a direction toward the grinding stone by rotating the screw 3.).
A plate 52 is secured by screws 5? to the base 1 near one end and in an upstanding part of this plate an adjusting and abutment screw 54 is threaded. This adjusting and abutment screw is mounted in the plate 52 relatively to one of the depending parts fl of the frame 8 so that by adjusting the screw in one direct-ion. it may be moved toward one edge of one of the depending parts 9 of the frame 8 in engagement. therewith. so as to position the frame 8 in order to prevent contact of the hexagonal cam collar 22 with the edge 25. iVhen the frame 8 is so positioned and under tension of the coiled expansion spring 30, the oscillatory frame 8 will be held firm and against a vibratory movement. When the frame 8 is so held, a plain cutting edge will be formed on the shear blade instead of a corrugated cutting edge.
The invention having been set forth, what is claimed as new and useful is 1. In a grinding machine as set forth, the combination with a pivoted frame, of a supporting base frame therefor having a grinding member mounted thereon, a dominant carriage guided longitudinally upon the pivoted frame in a direction at right angles to the grinding edge of the member, a screw mounted in bearings of the pivoted frame and having operative connectionswith said dominant carriage, an auxiliary carriage guided upon the dominant carriage and movable in a direction at right angles to that of the dominant carriage and toward the grind ing edge of the member, and means on the auxiliary carriage for clamping a shear blade with its cutting edge in osition at right angles to the grinding edge of the member.
2. In a grinding machine as set forth, the combination with a pivoted frame,of a supporting base frame therefor having a grinding member mounted thereon, a dominant carriage guided longitudinally upon the pivoted frame in a direction at right angles to the grinding edge of the member, a screw mounted in bearings of the pivoted frame and having operative connections with said dominant carriage, an auxiliary carriage guided upon the dominant carriage and movable in a direction at right angles to that of the dominant carriage and toward the grinding edge of the member, means on the auxiliary carriage for clamping a shear blade with its cutting edge in position at right angles to the grinding edge of the member, and means for causing a vibrating movement of the pivoted frame as the screw is rotated.
3. In a grinding machine as setforth, the coml'iination with a pivoted frame. of a supporting base frame therefor having a grimling member mounted thereon. a dominant rarriage guided longitudinally upon the pivoted frame in a direction at right angles to the grinding edge of the member, a screw mounted in bearings of the pivoted frame and having operative connections with said dominant carriage, an auxiliary carriage guided upon the dominant carriage and movable in a direction at right angles to that of the dominant carriage and toward the grinding edge of the member, means on the auxiliary carriage for clamping a shear blade with its cutting edge in position at right angles to the grinding edge of the member, and means for causing a vibrating movement of the pivoted frame as the screw rotated, said means comprising an abutment edge on the base frame, a polygonal cam carried by the screw to cooperate with the abutment edge, and spring means for operating on a part of the pivoted frame to move the camin engagement with said abutment edge whereby as the screw is rotated, the pivoted frame will receive a vibrating movement.
4. In a grinding machine as set forth, the combination with a pivoted frame, of a supporting base frame therefor having a grinding member mounted thereon, a dominant carriage guided longitudinally upon the pivoted frame in a direction at right angles to the grindingedge of the member, a screw mounted in bearings of the pivoted frame and having operative connections with said dominant carriage, an auxiliary carriage guided upon the dominant carriage and movable in a direction at right angles to that of the dominant carriage and toward the grinding edge of the member, means on the auxiliary carriage for clamping a shear blade with its cutting edge in position at right angles to the grinding edge of the member, means for causing a vibrating movement of the pivoted frame as the screw is rotated, said means comprising an abutment edge on the base frame, a polygonal cam carried by the screw to cooperate with the abutment edge, spring means operating on a part of the pivoted frame to move the cam in engagement with said abutment edge whereby as the screw is rotated, the pivoted f'ame will receive a vibrating movement, and means for adjusting the pivoted frame against the action of the spring means to hold the earn from engagement withsaid abutting edge to prevent a vibrating move ment of the pivoted frame, whereby a plain shearing or cutting edge will be'imparted to the shear blade. i
In a grinding machine as set forth, the combination with a sup 'iorting base frame, of a second frame pivotally mounted on the base frame, means for operatively support ing a shears blade on the pivoted frame for movement in a direction at right angles to the grinder shaft and also for movement on the frame parallel to the grinder shaft, a mechanism operatively connected with said meansfor giving it said movement in a direction parallel to the grinder shaft, and means engaging the pivoted frame and to operating with the base frame for vibrating the pivotally mounted frame, and a device to operatively engage with the pivoted frame to hold the pivoted frame out of contact with said last mentioned means to prevent the pivoted frame from vibrating.
6. In a grinding machine as set forth, a supporting base having a grinding member mounted thereon, a frame pivoted on the base, means operatively supporting a shears blade on the pivoted frame, whereby it may move in a direction at right angles to the grinder shaft, a rotating element mounted in the pivoted frame and operatively connected to the means for movingthe same in a direction parallel with the grinder shaft, means carried by therotating element and adapted to operatively engage with a part of the base for vibrating the pivoted frame, whereby the grinding member may impart. an ,unduiated cutting edge to the shear blade, spring means operatively' connecting with the pivoted frame to hold the means carried. by the rotating element rotatably in contact with a part of the base.
7. In a grinding machine as set forth, a supporting base having a grinding member mounted thereon, a frame pivoted on the base, means operatively supporting a shears blade on the pivoted frame, whereby it may move in a direction at right angles to the grinder shaft, a rotating element mounted in the pivoted frame and operatively connected to the means for moving thesame 111 a direction pa 'allel with the grinder shaft, means carried by the rotating element and adapted to operatively engage with a part of the base for vibrating the pivoted'frame, whereby the grinding member may impart an undulated cutting edge to the shears .blade, spring means operatively' connecting. with the pivoted frame to hold the means carried by the rotating element rotatably in contact with a part of the base,'.and means mounted on the base to operativelyengage the pivoted frame for disposing said; frame to prevent the device from operatively engaging said base so as to hold the pivoted frame against vibration,
wherebya straight cutting'edge may be imparted tothe shears blade.
' 8..In a grinding machine as set forth, a supporting base frame having abutments, a second framepivoted on the base frame for pivotal movements in a direction transversely of. the base frame, a rotating shaft mounted in bearings onthe base frame to one side of and in parallelism with the pivotedframe and carrying agrinder, means for operatively supporting a shear blade on the pivoted frame formovement in a direcjtion at right angles to the grinder, a screw swiveled in. the pivoted frame for rotary movement and adapted to be manually operated,-means operatively connectmg said screw and the shear blade supporting means, whereby the shear blade supporting means may be moved in a direction parallel with the grinder shaft, a cylindrical collar on one end of the screw engaging one of the abutments, a hexagon collar secured on the other end of the screw and having one of its faces bearing against the othe abutment, a spring engaging between a part of the base frame and pivoted frame to hold one of the faces of the hexagon collar in en gagen'ient with its respective abutment, whereby as the screw is rotated the pivoted frame will. vibrate and the shear blade supporting means will move parallel with the grinder shaft.
S). in a grinding machine as set forth, a supporting base frame having abutments, a second frame pivoted on the base frame for pivotal movements in a direoiion trans versely of the base frame, a rotating shaft mounted in bearings on the base frame to one side of and in parallelism with the pivoted frame and carrying a grinder, means for operatively supporting a shear blade on the pivoted frame for movement in a direction at right-angles to the grinder, a screw swiveled in the pivoted frame for rotary movement and adapted to be manually operated, means mcrativclv connecting said screw and the shear blade supporting means, whereby the shear blade supporting means may be moved in a direction parallel with the grinder shaft, a cylindrical collar on one end of the screw engaging one of the almtments, a hexagon collar secured on the other end of the screw and having one of its faces bearing against the other abutment. a spring engaging between a part of the base frame and pivoted frame to hold one o f the faces of the hexagon collar in engagement with its respective abutment. whereby as the screw is rotated the pivoted frame will vibrate and the shear blade supporting means will move parallel with the grinder shaft, and adjustabfe means adapted to engage the pivoted frame for moving the same to disengage the collars from said abutments, whereby the shear blade supporting means may be moved without vibrating the pivoted frame.
In testimony whereof we hereunto ailix our signatures.
Aid EE RT 'i. N I l E i \Vl l'li. DAV 1D FE YGUSON.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565309A (en) * 1949-03-26 1951-08-21 Jr George W Jacoby Hypodermic needle sharpener
US2625772A (en) * 1951-01-11 1953-01-20 Moore Jay Clair Grinding machine
US2753666A (en) * 1952-01-18 1956-07-10 Elmer C Sasse Scissors sharpener
US3895462A (en) * 1972-03-22 1975-07-22 Maurice Garin Microtome-blade sharpening machine
US4439952A (en) * 1981-10-22 1984-04-03 Roberts Gary G Portable grinder assembly
EP0249588A1 (en) * 1986-05-13 1987-12-16 Tormek AB Grinding device for grinding scissors
CN102837230A (en) * 2012-09-03 2012-12-26 张家港市金诚刀剪厂 Positioning device for adjusting inclination angle of scissors clamp in scissors grinding machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565309A (en) * 1949-03-26 1951-08-21 Jr George W Jacoby Hypodermic needle sharpener
US2625772A (en) * 1951-01-11 1953-01-20 Moore Jay Clair Grinding machine
US2753666A (en) * 1952-01-18 1956-07-10 Elmer C Sasse Scissors sharpener
US3895462A (en) * 1972-03-22 1975-07-22 Maurice Garin Microtome-blade sharpening machine
US4439952A (en) * 1981-10-22 1984-04-03 Roberts Gary G Portable grinder assembly
EP0249588A1 (en) * 1986-05-13 1987-12-16 Tormek AB Grinding device for grinding scissors
CN102837230A (en) * 2012-09-03 2012-12-26 张家港市金诚刀剪厂 Positioning device for adjusting inclination angle of scissors clamp in scissors grinding machine

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