US3191841A - Power driven stapling machine - Google Patents

Power driven stapling machine Download PDF

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Publication number
US3191841A
US3191841A US279834A US27983463A US3191841A US 3191841 A US3191841 A US 3191841A US 279834 A US279834 A US 279834A US 27983463 A US27983463 A US 27983463A US 3191841 A US3191841 A US 3191841A
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US
United States
Prior art keywords
piston
air
machine
air cylinder
stapling
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
US279834A
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English (en)
Inventor
Schafroth Werner
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.)
Individual
Original Assignee
Individual
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
Priority to BE647880D priority Critical patent/BE647880A/xx
Priority to DES64882A priority patent/DE1147540B/de
Application filed by Individual filed Critical Individual
Priority to US279834A priority patent/US3191841A/en
Priority to GB18941/64A priority patent/GB1013995A/en
Priority to AT411764A priority patent/AT273038B/de
Priority to LU46059D priority patent/LU46059A1/xx
Priority to FR974222A priority patent/FR1393095A/fr
Priority to CH626164A priority patent/CH454087A/de
Priority to DE19641503082 priority patent/DE1503082A1/de
Priority to NL6405298A priority patent/NL6405298A/xx
Application granted granted Critical
Publication of US3191841A publication Critical patent/US3191841A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/041—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure with fixed main cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/02—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor with provision for bending the ends of the staples on to the work
    • B25C5/0221—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation
    • B25C5/0257—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation without an anvil, e.g. using staples of particular shape bent during the stapling operation without the use of external clinching means
    • B25C5/0264—Stapling tools of the table model type, i.e. tools supported by a table or the work during operation without an anvil, e.g. using staples of particular shape bent during the stapling operation without the use of external clinching means having pivoting clinching means for bending the staple ends
    • B25C5/0271—Clinching means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/10—Driving means
    • B25C5/13—Driving means operated by fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F7/00—Nailing or stapling; Nailed or stapled work
    • B27F7/17—Stapling machines
    • B27F7/19—Stapling machines with provision for bending the ends of the staples on to the work

Definitions

  • This invention relates generally to a power driven stapling machine, and more particularly, to an air operated stapling machine of the retractable anvil type.
  • One of the principal objects of the present invention is to provide a simplified air piston construction and control for operating a stapling machine of lesser height. Another object is to provide a simplified arrangement and construction so that parts which normally have to be serviced can be adjusted or removed and replaced with a minimum of eifort. A further object is to provide for the penetration control of retractable anvils which can be made without making any adjustment on the automatic tripping device. Another object is to provide a magazine for staples which does not require a stop to keep the pusher from going beyond the position where it places the last staple in driving position. Another object is to provide a driving blade and pusher construction which is designed to prevent injury to the machine in the event that the driving blade is driven down onto the pusher.
  • Another object is to provide an air operated stapling machine in which the piston is moved in both directions by air pressure and in which the exhausted air is directed through the stapling mechanism to free said mechanism from foreign particles and deposit a coating of oil on the parts, since oiled air is used to actuate the machine.
  • Another object is to provide a machine whose casing is lower in height than previous machines.
  • Another object is to provide a cast aluminum frame in which no moving parts of the stapling machine come into contact with the aluminum.
  • Another object is to provide an adjustable piston rod in the power cylinder.
  • the present invention is embodied in an air operated stapling machine which comprises a novel air cylinder and piston construction, easily removable and replaceable air control means, a novel magazine with a pusher, there being no pusher stop means in said machine, said machine being so constructed that the operating air when exhausted is directed through the stapling mechanism.
  • FIG. 1 is a top plan view of a stapling machine embodying the present invention
  • FIG. 2 is a vertical cross-sectional view taken along the line 2-2 in FIG. 1 and showing the piston in its upper or driving position and the trigger in its upper position,
  • FIG. 3 s a fragmentary view similar to that shown in FIG. 2, except that the piston is shown in its lower or driven position and the valve trip lever is moved right- Wardly,
  • FIG. 4 is a fragmentary view showing the trigger in its lower position
  • FIG. 5 is a bottom view of the stapling machine
  • FIG. 7 is a fragmentary view with the back plate off showing the anvil actuating mechanism, with the anvil on the right shown in its retracted position and the anvil on the left in its clinching position, said view being split to illustrate the operation of the machine,
  • a stapling machine M having an air cylinder C, a handle H with an air reservoir 1 therein and with a trigger 2 thereon, a stapling mechanism 3, and a magazine 4 for feeding staples to said stapling mechanism 3.
  • the handle H is connected to a source of compressed air suitable for stapling machines.
  • the valve trip lever 32 has a sloping forward face 38 adapted to abut a plunger or rod 39 mounted in a screw 40 and guide 41 positioned in an opening 42 in the lower casing 6, said plunger 39 having a spring 43 therearound to normally bias said plunger 39 to its upper position shown in FIG. 2.
  • the plunger 39 has a top portion 44 which extends above the screw 40.
  • the screw 40 extends slightly above the inside bottom surface of the air cylinder C to allow air to enter beneath the piston 7 at the proper time.
  • the valve trip lever 32 is slidably mounted in the trigger housing 45 with a return spring 46 secured thereto for normally biasing said trip lever 32 in its leftward position shown in FIG. 2.
  • the trigger 2 is pivotally mounted on a pin 47 and has a trigger spring 48 mounted thereto and to a fixed pin 49 for normally biasing the trigger 2 to its lower position against a trigger stop 50.
  • Rollers 51 are mounted on the pin 47 and a rearward pin for the valve trip lever 32 to slide upon.
  • the lower casing 6 is provided wtih a lower chamber 52, and a horizontal port or passage 53 which extends from the lower exhaust port 37 through exhaust passage 64 to an opening 54 in the bottom surface 55 of the lower casing 6.
  • the stapling mechanism 3 may be of any suitable construction such as that generally shown in the Schafroth Patents Nos. 2,897,502, 2,897,503 and 2,740,- 1l9, which are of the retractable anvil type.
  • the adjusting mechanism 56 may be the same or similar to that shown in the Schafroth Patent No. 2,897,- 502, which describes the adjustment mechanism and operation of the stapling mechanism.
  • the retractable anvils are mounted on a pin 56a which can be adjusted vertically to control the depth of the anvil penetration.
  • the bolt 9 is secured to a staple driving blade 57 whose lower edge 58 at the rear portion 59 is beveled, preferably at an angle of about 45.
  • the magazine 4 is suitably secured to the stapling mechanism 3 and is provided with a pusher 60 and a spring 61 for biasing the pusher 60 toward the stapling mechanism 3.
  • the upper edge 62 of the forward portion of the pusher 60 is beveled, preferably at a 45 angle, so that if an operator actuates the machine M after the last staple has been driven, the beveled driving blade 57 simply hits against the beveled surface 62 of the pusher 60 thereby driving the pusher 60 rearwardly and allowing the driving blade 5'7 to continue to its downward position without causing any harm or damage to the machine.
  • the spool 23 is in its lower position, as shown in FIG. 3, and air is allowed to move from the reservoir 1 through the opening 33 and into the opening 20 and into the space below the upper flange 24 of the spool 23 and then into the lower port which leads to the lower chamber 52 directly into the air cylinder C beneath the piston 7, thereby moving the piston 7 upwardly to the position shown in FIG. 2.
  • the piston 7 moves upwardly from its lowermost position, it allows the plunger 39 to move upwardly.
  • the valve trip lever 32 can move leftwardly under the force of the light return spring 46 just as soon as the trigger 2 is released and allowed to fall or be pivoted downwardly under force of the trigger spring 48 thereby releasing the plunger stem 22 from the hole 63.
  • the piston 7 moves up, it moves the stapling mechanism 3 and staple driving blade 57 with it, since they are all operatively connected together.
  • the plunger 21 mounted in the opening 20 is designed to have the flanges 24 and 25 with washers 26 therein. By turning the nut 28, compression is exerted on the washers to increase their diameter. This is important for adjustment when the machine is first assembled and tested, and is also important in the maintenance of the machine after it has been in service for some time. The user of the machine will be able to stop any leakage in this valve by simply tightening two members, the stud 29 and the nut 28, and will therefore not have to wait for replacement parts. The position and design of the plunger 21 allows the machine to be serviced with case.
  • the penetration control for the anvils can be set for the deepest to the shallowest position without making any adjustment to the automatic tripping device. This is done simply by moving the adjusting mechanism 56.
  • the foregoing machine can operate up to 580 strokes per minute on a test block.
  • the frame of the machine is aluminum to give long life, but hardened steel is used for the driving blade guide and to support the anvils.
  • a wear plate is provided on the front side of the machine where the anvil holders and plunger slide.
  • the pusher 60 is designed so that it can operate without a stop.
  • the air cylinder C is designed so that the thin edge of the piston at the sealing means 8 does not come into contact with the end of the cylinder bore.
  • the cast aluminum frame is designed so that no moving parts of the stapling machine come in contact with the aluminum. The entire design presents a compact machine which is lower in height, which is desirable.
  • the exhaust of oiled air from the air cylinder, both above and below the piston 7, is directed through passages to a port or opening 54 about A inch from the bolt 9 so that said oiled air is forced or blown downwardly through the stapling mechanism thereby removing foreign particles and automatically oiling the moving parts.
  • the air cylinder C is designed so that the piston is stopped or hit near the center where it is strongest, the members 19a between the cross chambers 19 acting as four stops to limit the upward movement of the piston 7.
  • the piston rod or bolt 9 is adjustable because of the spring 12 and lock nut 15 arrangement at the top thereof.
  • a power driven stapling machine having a stapling mechanism therein, an air cylinder connected to said stapling mechanism, said air cylinder being operatively connected to a source of compressed air, a trigger pivotal ly mounted on said machine, a piston slidably mounted within said air cylinder, said piston having a rod operatively connected to said stapling mechanism, an air chamber above said piston, said air chamber having downwardly extending members therein adapted to contact and form an upper stop for said piston substantially inwardly of the peripheral edge thereof, said piston being re- I siliently mounted on said rod, valve means for directing compressed air above said piston and exhausting air from below said piston, said valve means mounted in said air cylinder casing in a separate opening removed from said air piston, lower stop means for said piston mounted in the bottom of said air cylinder and positioned to contact said piston inwardly of its peripheral edge, said lower stop means having a plunger therein adapted to contact a valve trip lever for moving said valve means to a position for allowing compressed air
  • An air operated stapling machine having a stapling mechanism therein, a magazine secured thereto for feeding staples thereto, an air cylinder connected to said stapling mechanism, said air cylinder having a handle with an air reservoir therein, a trigger pivotally mounted on said machine, a piston slidably mounted within said air cylinder, an air chamber above said piston, said piston having a rod operatively connected to said stapling mechanism, said piston being resiliently mounted on said rod, valve means mounted in a vertical opening in said air cylinder and removed from alignment with said piston for directing compressed air above said piston and exhausting air from below said piston, said valve means having a valve means plunger extending outwardly below said air cylinder, lower stop means for said piston mounted in the bottom of said air cylinder and positioned to contact said piston inwardly of the outer edges, said lower stop means having a lower stop means plunger therein operatively connected to a valve trip lever for moving said valve means plunger and said valve means to a position allowing compressed air to enter beneath said
  • An air operated stapling machine having a stapling mechanism therein, a magazine secured thereto for feeding staples thereto, an air cylinder secured to said stapling mechanism, said air cylinder having a handle with an air reservoir therein, a trigger pivotally mounted on said machine, a piston slidably mounted within said air cylinder having an upper head with a chamber above said piston, said chamber formed in part by cross passages in said upper head, the material between said passages acting as an upper stop for said piston and contacting said piston inwardly of the.
  • said piston having a rod operatively connected to said stapling mechanism, said piston being resiliently mounted on said rod, valve means for directing compressed air above said piston and exhausting air from below said piston, said valve means mounted within a vertical opening in said air cylinder casing and removed from alignment with said piston and provided with means for adjusting same to prevent leakage, lower stop means for said piston mounted in the bottom of said air cylinder and positioned to contact said piston inwardly of the peripheral edge, said lower stop means having a plunger therein adapted to contact a valve trip lever for moving said valve means to a position allowing compressed air to enter beneath said piston and exhaust the air from above said piston, passages in said air cylinder connected to the exhaust sides of said piston during exhaust, said passages connected to a port above said stapling mechanism so that exhaust air is directed through said stapling mechanism, said stapling mechanism having an adjusting mechanism for controlling the penetration of the retractable anvil therein, said stapling mechanism having a staple driving blade with the lower rearward surface beve

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US279834A 1963-05-13 1963-05-13 Power driven stapling machine Expired - Lifetime US3191841A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
BE647880D BE647880A (xx) 1963-05-13
DES64882A DE1147540B (de) 1963-05-13 1959-09-11 Mit Druckluft betriebenes Geraet zum Einschlagen von Heftklammern, Naegeln od. dgl.
US279834A US3191841A (en) 1963-05-13 1963-05-13 Power driven stapling machine
GB18941/64A GB1013995A (en) 1963-05-13 1964-05-06 Power driven stapling machine
AT411764A AT273038B (de) 1963-05-13 1964-05-11 Heftmaschine mit Druckluftantrieb
LU46059D LU46059A1 (xx) 1963-05-13 1964-05-12
FR974222A FR1393095A (fr) 1963-05-13 1964-05-12 Agrafeuse à entraînement mécanique
CH626164A CH454087A (de) 1963-05-13 1964-05-13 Motorisch angetriebene Heftmaschine
DE19641503082 DE1503082A1 (de) 1963-05-13 1964-05-13 Motorisch angetriebene Heftmaschine
NL6405298A NL6405298A (xx) 1963-05-13 1964-05-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US279834A US3191841A (en) 1963-05-13 1963-05-13 Power driven stapling machine

Publications (1)

Publication Number Publication Date
US3191841A true US3191841A (en) 1965-06-29

Family

ID=23070587

Family Applications (1)

Application Number Title Priority Date Filing Date
US279834A Expired - Lifetime US3191841A (en) 1963-05-13 1963-05-13 Power driven stapling machine

Country Status (9)

Country Link
US (1) US3191841A (xx)
AT (1) AT273038B (xx)
BE (1) BE647880A (xx)
CH (1) CH454087A (xx)
DE (2) DE1147540B (xx)
FR (1) FR1393095A (xx)
GB (1) GB1013995A (xx)
LU (1) LU46059A1 (xx)
NL (1) NL6405298A (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259292A (en) * 1964-03-17 1966-07-05 Bostitch Inc Fastener driving apparatus
US4716813A (en) * 1985-05-06 1988-01-05 Stanley-Bostitch, Inc. Pneumatically operated stapler with improved actuating and clinching mechanism
US20130240594A1 (en) * 2012-03-19 2013-09-19 Stanley Fastening Systems, L.P. Cordless carton closer
US20140001227A1 (en) * 2012-06-28 2014-01-02 Stanley Fastening Systems, L.P. Carton closing tool having tool-free adjustment members
US20140001226A1 (en) * 2012-06-28 2014-01-02 Stanley Fastening Systems. L.P. Cordless carton closing tool and method of replacing a carton closer clinching member
US9987009B2 (en) * 2016-03-29 2018-06-05 King Saud University Pneumatic actuator for dispensing surgical staples

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1272249C2 (de) * 1963-11-05 1974-08-15 Pneumatisches geraet zum eintreiben von klammern, naegeln od. dgl
DE1285959B (de) * 1964-12-28 1968-12-19 Behrens Friedrich Joh Druckluftbetaetigtes Geraet zum Eintreiben von Naegeln, Heftklammern od. dgl.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899935A (en) * 1959-08-18 Air valve for a pneumatic tool
US2989948A (en) * 1954-07-07 1961-06-27 Internat Staple And Machine Co Air powered stapling machine
US2995113A (en) * 1960-03-23 1961-08-08 Steiner Alois Pneumatic sledge hammer
US3056964A (en) * 1960-03-31 1962-10-09 Spotnails Pneumatically operated fastener driving machine
US3086207A (en) * 1961-04-24 1963-04-23 Signode Steel Strapping Co Pneumatic fastening tool

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2585942A (en) * 1950-08-23 1952-02-19 Senco Products Staple feed mechanism for portable pneumatic staplers
DE1025349B (de) * 1954-09-18 1958-02-27 Reich Maschf Gmbh Karl Mit Druckluft betriebene Vorrichtung zum Einschlagen von Naegeln od. dgl.
US2801415A (en) * 1955-03-25 1957-08-06 Bostitch Inc Fastener-applying implement
DE1043974B (de) * 1955-07-12 1958-11-13 Reich Maschf Gmbh Karl Mit Druckluft betriebene Vorrichtung zum Einschlagen von Naegeln od. dgl.
US2850738A (en) * 1955-07-12 1958-09-09 Kenwood Ind Dev Company Inc Pneumatic staple driving guns
FR1172550A (fr) * 1955-11-14 1959-02-11 Modernair Corp Agrafeuse à commande pneumatique
DE1781796U (de) * 1958-11-26 1959-01-22 Dieter Haubold Heft- oder nagelgeraet mit druckluftantrieb.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899935A (en) * 1959-08-18 Air valve for a pneumatic tool
US2989948A (en) * 1954-07-07 1961-06-27 Internat Staple And Machine Co Air powered stapling machine
US2995113A (en) * 1960-03-23 1961-08-08 Steiner Alois Pneumatic sledge hammer
US3056964A (en) * 1960-03-31 1962-10-09 Spotnails Pneumatically operated fastener driving machine
US3086207A (en) * 1961-04-24 1963-04-23 Signode Steel Strapping Co Pneumatic fastening tool

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259292A (en) * 1964-03-17 1966-07-05 Bostitch Inc Fastener driving apparatus
US4716813A (en) * 1985-05-06 1988-01-05 Stanley-Bostitch, Inc. Pneumatically operated stapler with improved actuating and clinching mechanism
US20130240594A1 (en) * 2012-03-19 2013-09-19 Stanley Fastening Systems, L.P. Cordless carton closer
US20140001227A1 (en) * 2012-06-28 2014-01-02 Stanley Fastening Systems, L.P. Carton closing tool having tool-free adjustment members
US20140001226A1 (en) * 2012-06-28 2014-01-02 Stanley Fastening Systems. L.P. Cordless carton closing tool and method of replacing a carton closer clinching member
EP2679345A3 (en) * 2012-06-28 2017-01-25 Stanley Fastening Systems L.P. Carton closing tool having tool-free adjustment members
US9724812B2 (en) * 2012-06-28 2017-08-08 Stanley Fastening Systems, L.P. Cordless carton closing tool and method of replacing a carton closer clinching member
US20170305005A1 (en) * 2012-06-28 2017-10-26 Stanley Fastening Systems, L.P. Cordless carton closing tool and method of replacing a carton closer clinching member
US10464197B2 (en) * 2012-06-28 2019-11-05 Stanley Fastening Systems, L.P. Carton closing tool having tool-free adjustment members
US10589409B2 (en) * 2012-06-28 2020-03-17 Stanley Fastening Systems, L.P. Cordless carton closing tool and method of replacing a carton closer clinching member
US9987009B2 (en) * 2016-03-29 2018-06-05 King Saud University Pneumatic actuator for dispensing surgical staples

Also Published As

Publication number Publication date
DE1147540B (de) 1963-04-18
CH454087A (de) 1968-04-15
GB1013995A (en) 1965-12-22
FR1393095A (fr) 1965-03-19
AT273038B (de) 1969-07-25
BE647880A (xx)
NL6405298A (xx) 1964-11-16
DE1503082A1 (de) 1969-09-25
LU46059A1 (xx) 1964-11-12

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