US3336098A - Tool for injecting materials into wood - Google Patents

Tool for injecting materials into wood Download PDF

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Publication number
US3336098A
US3336098A US310384A US31038463A US3336098A US 3336098 A US3336098 A US 3336098A US 310384 A US310384 A US 310384A US 31038463 A US31038463 A US 31038463A US 3336098 A US3336098 A US 3336098A
Authority
US
United States
Prior art keywords
head
needle
piston
cylinder
wood
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
US310384A
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English (en)
Inventor
Reece Stanley Henry
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.)
COBRA (WOOD TREATMENT) Ltd
COBRA WOOD TREAT Ltd
Original Assignee
COBRA WOOD TREAT Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by COBRA WOOD TREAT Ltd filed Critical COBRA WOOD TREAT Ltd
Application granted granted Critical
Publication of US3336098A publication Critical patent/US3336098A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
    • B27K3/10—Apparatus
    • B27K3/105—Injection apparatus

Definitions

  • A11 injection head for injectin-g substances into wood through a needle upon needle withdrawal, has a presser bar at the needle end of the head that engages the wood to force back the piston of the cylinder from which the substance is fed to the needle.
  • the piston projects from the cylinder end remote from the needle, and two posts, one on each side of the head, are secured to opposite ends of the presser bar, and are slidably mounted on the head.
  • a cross bar is removably secured to the projecting en-d of the piston and to the ends of the posts remote from the presser bar.
  • cross members on opposite ends of the head that slidably mount the posts, a collar slidably adjustable on each of the posts between the cross members, and a compression spring on each of the posts and acting between the collars and the cross member which is at the end of the cylinder remote from the needle.
  • Each collar can be secured to its post in an adjusted position to vary the tension of the spring.
  • This invention relates to tools for injecting substances into wood.
  • the substance to be injected is usually a liquid or various antiseptic products but may be a colouring or fireproong substance and the tool is used for injecting, for example, wooden poles or trees.
  • Such tools consist generally of an injection head having a needle (or needles) which is forced into the wood by a levering action of the tool and has passages through which, as the needle is injected, the substance is forced into the wood by the movement of a piston in a cylinder fed from a reservoir.
  • an injection head for a tool for injecting substances into wood comprising a needle-holder, a cylinder having an inlet port for the substance and an outlet port communicating with said holder, a piston in said cylinder closing said inlet port, and a presser member connected to said piston adapted to engage the Wood when the tool is in use and to move the piston by pressure against the wood so that said inlet port opens and the cylinder is charged with the substance only when the needle has been injected into the wood to the desired depth, and means for effecting the return stroke of the piston so as to eject the substance from the cylinder through the needle into the wood as the needle is being withdrawn from the wood.
  • FIG. l is an inverted plan view of an injection head according to the present invention.
  • FIG. 2 is a sectional view on the longitudinal medial plane of FIG. l.
  • FIG. 3 is a side elevation of a tool incorporating an injection head according to the invention, in use and to a reduced scale.
  • an injection head for a tool for injecting substances into wood say a pole
  • the holder 10 is connected to or forms part of a cylinder 12 having an outlet port 13 connected by a passage 14 to the bore 11 of the holder 10 and having an inlet port 15 for the substance from a reservoir in a handle 16 connected ot the cylinder d2.
  • the cylinder 12 is substantially horizontal so that the inlet port 15 is uppermost and the outlet port 13 is lowermost an-d the latter lies nearer a pole 17 to be injected than the inlet port 15.
  • a piston 18 which is spring-loaded, as later described, so as to urge the piston to a position in which it closes the inlet port 15, that is to say, to a contracted position.
  • the piston 18 at its end remote from the needle N projects out of the cylinder 12 and has a connection with a presser member 19 at the needle end of the head.
  • Said connection consists of a cross bar 20 secured centrally and releasably, for example by a nut 21 and threaded end piece on the piston 18, and is connected adjacent each of its ends to one end of posts 22 extending parallel to the cylinder 12 and connected at their other ends to the presser member 19 which is in the form of a cross bar having its outer face curved.
  • each post 22 is slidably guided in cross members 23, 24 fixed to opposite ends of the cylinder 12 and intermediate the cross members 23, 24, each post 22 has a slidably adjustable collar 25 xed thereto by a set screw 26 and a compression spring 27 which at opposite ends abuts said collar 25 and the cross member 23 nearer the projecting end of the piston. Adjustment of the collars 25 enables adjustment of the tension of the springs 27. Thev springs 27 then urge the piston 18 in the direction of the needle N to its contracted position so that the presser member 19 lies spaced between the outer end of the needle N and the outer end of the needle holder 10.
  • the cross member 24 which is nearer the needle N is removably attached to the head by screws 28 and acts also to close the adjacent end of the cylinder 12 and carries a limit stop 29 for said presser member 19.
  • the ends of the posts 22 are connected to the cross bar 20 as follows.
  • Each post 22 has a screw-threaded end lwhich passes through a hole in the cross bar 20 and is held by a nut 30 on each side of the cross bar 20.
  • Between each inner nut 30 there is a sleeve 31 on the post 22 which acts to limit the movement of the piston 18 to its contracted position.
  • the sleeves 31 can be replaced by other sleeves of dierent lengths so as to vary the return stroke of the piston 18, and thus the quantity of substance forced through the needle N.
  • a liner 32 is provided between the piston 18 and cylinder -12.
  • the point of the needle N is placed against the pole 17 and is inserted into the pole 17 'by a levering action on the handle 16 which is connected lby a chain 33 to the pole 17 above the head to provide a fulcrum.
  • the presser member 19 abuts the pole 17 and is depressed causing the piston 18 to be extended.
  • the piston 18 has moved a predetermined distance to uncover the inlet port 15 more or less, as required. No injection of substance thus takes place during insertion of the needle N.
  • the tool is then operated to withdraw the needle N, and, as this takes place, the pressure of the presser member -19 against the pole 17 decreases and the piston 18 is urged inwards by the springs 27 causing the substance to be injected through the needle N into the pole 17, and
  • the numeral 16A indicates a supporting web for the handle 16.
  • An injection head for a tool for injecting substances into wood comprising a needle-holder having a bore, a needle at one end of the head connected to said bore, a hollow piston cylinder adjacent said bore and extending the length of the head from the needle end of the head .to and opening at the end of the head remote from the needle end, said piston cylinder having an inlet opening for connection to a reservoir for substance to be injected and an outlet port communicating with said bore, the outlet port being located nearer the needle end of the head than is the inlet port, a piston in said cylinder for closing and opening said inlet port and movable toward the needle end of the head to close said inlet port and eject substance from the piston cylinder through said outlet port to said bore and needle, said piston projecting at one end from within said piston cylinder through said cylinder opening at the end of the head remote from the needle end, a presser member at the needle end of the head for engaging the wood when the tool is in use, two posts at opposite exterior sides of the head and slidably mounted thereon to move
  • said means for limiting the stroke of the piston comprises on each of said posts a removable sleeve which may be replaced by a sleeve of dilerent length, each sleeve being located between said cross ⁇ bar and the cross member at the end of the head remote from 4the needle end, and screw-threaded ends on the posts passing through said cross bar and carrying nuts.
  • An injection head as claimed in claim 1 the further improvement consisting in that screws removably attach to the head lthe cross member at lthe needle end of the head, and the last-mentioned cross member closes that end of the cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US310384A 1962-09-27 1963-09-20 Tool for injecting materials into wood Expired - Lifetime US3336098A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB36638/62A GB978366A (en) 1962-09-27 1962-09-27 Tool for injecting materials into wood

Publications (1)

Publication Number Publication Date
US3336098A true US3336098A (en) 1967-08-15

Family

ID=10389920

Family Applications (1)

Application Number Title Priority Date Filing Date
US310384A Expired - Lifetime US3336098A (en) 1962-09-27 1963-09-20 Tool for injecting materials into wood

Country Status (6)

Country Link
US (1) US3336098A (de)
AT (1) AT255111B (de)
CH (1) CH416064A (de)
DK (1) DK106989C (de)
ES (1) ES291928A1 (de)
GB (1) GB978366A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT386153B (de) * 1986-01-20 1988-07-11 Haltmeier Georg Verfahren zum impraegnieren von holz

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885121A (en) * 1957-03-19 1959-05-05 Joseph A Pinkard Semi-automatic injector for liquid fungicide
US2993245A (en) * 1958-06-14 1961-07-25 Cobra Wood Treat Ltd Tools for injecting materials into wood

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885121A (en) * 1957-03-19 1959-05-05 Joseph A Pinkard Semi-automatic injector for liquid fungicide
US2993245A (en) * 1958-06-14 1961-07-25 Cobra Wood Treat Ltd Tools for injecting materials into wood

Also Published As

Publication number Publication date
GB978366A (en) 1964-12-23
AT255111B (de) 1967-06-26
DK106989C (da) 1967-04-10
ES291928A1 (es) 1964-01-01
CH416064A (de) 1966-06-30

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