US3266459A - Chemical compound applicator for threaded fasteners - Google Patents

Chemical compound applicator for threaded fasteners Download PDF

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Publication number
US3266459A
US3266459A US289256A US28925663A US3266459A US 3266459 A US3266459 A US 3266459A US 289256 A US289256 A US 289256A US 28925663 A US28925663 A US 28925663A US 3266459 A US3266459 A US 3266459A
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Prior art keywords
piston
passage
fastener
chambers
housing
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US289256A
Inventor
Jay D Anthony
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RBS INDUSTRIES Inc A CORP OF
RBS INDUSTRIES Inc A DE CORP
RM FORMED PRODUCTS COMPANY A CORP OF CT
TREFOIL CAPITAL Corp ONE PENN PLAZA 250 WEST 34TH STREET NEW YORK NY 10119 A CORP OF NY
Screw and Bolt Corp of America
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Screw and Bolt Corp of America
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Application filed by Screw and Bolt Corp of America filed Critical Screw and Bolt Corp of America
Priority to US289256A priority Critical patent/US3266459A/en
Priority to GB8680/64A priority patent/GB995994A/en
Priority to DES90077A priority patent/DE1265628B/en
Priority to FR968372A priority patent/FR1389858A/en
Priority to NL646403109A priority patent/NL145472B/en
Priority to BE649462A priority patent/BE649462A/xx
Priority to LU46360D priority patent/LU46360A1/xx
Application granted granted Critical
Publication of US3266459A publication Critical patent/US3266459A/en
Anticipated expiration legal-status Critical
Assigned to RBS INDUSTRIES, INC. A CORP OF DE reassignment RBS INDUSTRIES, INC. A CORP OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: RAYMARK FORMED PRODUCTS COMPANY
Assigned to TREFOIL CAPITAL CORPORATION, ONE PENN PLAZA, 250 WEST 34TH STREET, NEW YORK, NY 10119 A CORP OF NY reassignment TREFOIL CAPITAL CORPORATION, ONE PENN PLAZA, 250 WEST 34TH STREET, NEW YORK, NY 10119 A CORP OF NY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: RBS INDUSTRIES, INC
Assigned to RBS INDUSTRIES INC A DE CORP reassignment RBS INDUSTRIES INC A DE CORP ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: RAYMARK FORMED PRODUCTS COMPANY
Assigned to RM FORMED PRODUCTS COMPANY, A CORP OF CT reassignment RM FORMED PRODUCTS COMPANY, A CORP OF CT MERGER (SEE DOCUMENT FOR DETAILS). Assignors: MODULUS CORPORATION
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
    • B05C3/09—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating separate articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/004—Sealing; Insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/06—Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure or fretting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/34—Locking by deformable inserts or like parts

Definitions

  • a housing is provided with a straight passage through it having a rear end and a front end. Slidably mounted in this passage is a piston that projects from its rear end. Means are connected with the rear end of the piston yto position its front end in the front end of the passage to close it.
  • the housing is provided at opposite sides of the passage adjacent the front end thereof with chambers extending along the passage and opening into it. The inner sides of the chambers are spaced apart and normally are closed by the piston.
  • the housing has an inlet por-t for each chamber, and means are provided for delivering a different chemical compound to each port under pressure to maintain the chambers full of those compounds.
  • the piston is movable rearwardly when its front end is engaged by a fastener shank in line with it and having a diameter no lgreater than the diameter of the piston. Consequently the fastener can enter the passage to receive coatings of the chemical compounds in two spaced bands extending lengthwise of the fastener. When the piston is moved forward again, the coated fastener is ejected from the passage.
  • FIG. 1 is a side view of my applicator, mostly in vertical section;
  • FIG. 2 is a similar view, showing a bolt being coated
  • FIG. 3 is an enlarged vertical ⁇ .section through the coating housing taken on the line III--III of FIG. 2 but with the bolt absent;
  • FIG. 4 is an enlarged horizontal section taken on the line IV--IV of FIG. 2;
  • FIG. 5 is an enlarged horizontal section taken on the line V-V of FIG. 2, with the bolt removed;
  • FIG. 6 is an enlarged side view of a bolt coated by my applicator.
  • the applicator housing includes a metal block 1, usually cylindrical, that is provided with an axial passage 2 extending through it from end to end.
  • This passage has a diameter great enough to receive the threaded fasteners that are to be coated, preferably with a slight clearance around them.
  • the block can be used on its sides, it is more satisfactory in an upright position as shown.
  • Slidably mounted in the block passage is a piston 3 that is in ⁇ the form of a rod long enough to extend entirely through the block and project from its rear or upper end.
  • the lower part of the block is provided at opposite sides of its central passage with a pair of vertical chambers 4 and 5, preferably extending upwardly from the lower or front face of the block.
  • the inner sides of the chambers open into the central passage, while their outer sides are open at the periphery of the block.
  • the piston When the piston is in its lower position as shown in FIG. l, with its front end closing the front or lower end of the passage, the inner sides of the two chambers are spaced apart by the piston and normally are closed by it.
  • a circular bottom plate 7 is fastened by screws 8 to the bottom of the block.
  • This plate projects radially from the block and for-ms a retaining member which supports a sleeve 9 that snugly encircles the block and extends a s'hort distance up above the top of the chambers.
  • the sleeve closes the outer sides of the chambers. It is held down tightly against the bottom plate by means of a nut 10 screwed on the threaded upper end of the block and preferably pressing a yoke 11 down against the sleeve.
  • the nut, yoke and bottom plate also form parts of the applicator housing.
  • the yoke is supported by a bracket 12 that is attached to a suitable support for supporting the housing.
  • the sleeve is provided at the outer side of each chamber with an inlet port 13, in which a tube 14 is screwed, the opposite end of the tube being connected to suitable means (not shown) for delivering a plastic chemical compound 15 or 16 to the adjoining chamber under constant pressure.
  • suitable means not shown
  • the applicator may be used by aligning a screw or bolt 1S with the lower end of the lowered piston as shown in FIG. 1, and then simply raising the threaded end of the bolt to push the piston upwardly in passage 2 so that the threaded shank of the bolt takes the place of the piston between the two chambers ⁇ as shown in FIG. 2.
  • the opposite sides of the bolt therefore are exposed directly to the chemical compounds in the two chambers, and the pressure behind the compounds forces them forward between the screw threads so that when the bolt is removed from the housing its threaded shank is provided with a pair of circumferentially spaced bands 15a and 16a of the chemical compounds extending lengthwise along it,
  • the bolt is not left in the housing long enough for the viscous compounds to ilow laterally around it and meet. As the bolt is removed, the piston is lowered with it to keep the two compounds apart. EX- cess plastic may be wiped from the bolt as it is withdrawn from the housing, by means of a resilient wiping ring 19 ⁇ mounted in a recess 20 (FIGS. 3 and 5) in the bottom of block 1 around the lower end of the central passage. The ring is supported by the bottom plate and snugly engages the bolt.
  • the chemical compounds can be kept away from the end threads of the bolt, so that a nut can be started on the bolt more easily, by providing the front end of the piston with a large recess 21 that receives the end portion of the bolt and thereby covers its threads. This recess also centers the bolt in passage 2.
  • the piston be :raised in the housing passage, not by the pressure of the bolt against it, but by power means connected with the upper end of lthe piston.
  • power means may include a double acting air cylinder 23 rigidly mounted above piston 3 and containing a piston of its own which has ,la downwardly extending piston Irod 24 suitably conneoted to the upper end of the piston below it.
  • under pressure can be admi-tted and exhausted from the opposite ends of the cylinder by means of electric valves and 26, the lower one of which is opened to air pressure automatically or by a suitable manual operation when the bolt is engaged with the lower end of the piston.
  • the upper valve exhausts to atmosphere.
  • the piston then is slowly raised or retracted in the housing by piston rod 24 as the operator maintains the bolt in contact with its lower end.
  • it may trip a limit switch 27 that controls the upper valve 26 to admit air pressure to the upper end of the cylinder tio push the piston back down again, while the lower valve connects the lower end of the cylinder with the atmosphere.
  • piston 3 is provided with an axial bore in which a small rod 30 is slidably mounted. 'The upper end of this rod projects above the piston and the lower end carries a head 31 in recess 21.
  • a bolt is inserted in this recess while the piston is in its lower position, the head and rod are moved up in the piston so that the upper end of the rod will close an electric switch 32 rigidly mounted inside of a switch housing 33 screwed onto the upper end of the piston.
  • This housing is supporte-d by pis-ton rod 24 from the cylinder above it.
  • the switch is connected with the lower valve to cause it to admit air pressure to the lower end of the cylinder, whereby the simple step of inserting the bolt in recess 21 sets the applicator in operation.
  • An applicator for applying a pair of circumferentially spaced bands of chemical compounds lengthwise along the shank ⁇ of a fastener, said applicator comprising a ,housing provided with a straight passage therethrough having a .rear end and a front end, a piston slidably mounted in the passage and projecting from said rear end, means operatively connected with the rear end of the piston Afor normally positioning its 'front end in the r-ont end Iof the passage to close it, the housing being provided at opposite sides of said passage adjacent the front end of the passage with chambers extending along the passage and opening into it, the inner sides of said chambers being spaced apart and normally being closed by the piston, the housing having an inlet port for each chamber, and means ttor delivering a different chemical compound Ito each port under pressure to maintain said chambers full of the compounds, the piston being movable rearwardly when its front end is engaged by an axially aligned fastener shank having a diameter no greater than the diameter of the piston
  • An applicator according to claim 1 including a resilient wiping ring mounted in the front end of said passage and having an inner diameter slightly smal-ler than the diameter of the passage.
  • said 'housing includes a block provided with said passage and chambers, and a sleeve surrounding said block and closing the outer sides of the chambers, the sleeve being provided with said inlet ports.
  • An applicator accor-ding to claim 4 including a retaining member secured to the front end of said block and engaged by the front end of said sleeve, the block having an externally :threaded portion projecting from the lrear end of the sleeve, and a nut screwed onto said threaded portion for pressing the sleeve against said retaining member.
  • An applicator including fluid operated pressure means operatively connected with the piston, a normally closed valve controlling delivery of pressure fluid to said fluid pressure operated means to retract the piston, and means for opening said valve when the tip of a fastener is brought intro engagement with the front end of the piston.
  • An applicator including a normal-ly closed electrically operated valve controlling delivery of pressure fluid to said uid pressure operated means to return said piston tfrom its retracted position, an electric limit switch connected with said last-mentioned valve, and means movable rearwardly with the piston for operating said switch.

Description

Aug. 16, 1966 J. D. ANTHNY 3,266,459
CHEMICAL COMPOUND APPLICATOR FOR THREADED FASTENERS Filed June 20, 1963 2 Sheets-Sheet 1 V- lm "23 l I i u lll rf- 1/ :1:1 l l Imul 25 W24 Ill! L 0 A l ll 27 1 l lll E :ull: 5
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CHEMICAL COMPOUND APPLICATOR FOR THREADED FASTENERS Filed June 20, 1963 2 Sheets-$heet 2 INVENTOR.
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United States Patent O 3,266,459 CHEMICAL COMPOUND APPLICATOR FOR THREADED FAS'IENERS Jay l). Anthony, Hobart, Ind., assignor to Screw & Bolt Corporation of America, Pittsburgh, Pa., a corporation of Pennsylvania Filed June 20, 1963, Ser. No. 289,256 8 Claims. (Cl. 118-1) This invention relates to applicators for applying circumferentially spaced bands of chemical compounds along the shanks of threaded fasteners, such as screws and bolts.
In my Patent Number 3,061,455 a self-locking bolt is shown that is provided with spaced areas of chemical compounds which, when mixed together, will react and lock the nut and its encircling nut together. This type of bolt is well known and widely used, a preferred form being one in which two bands of chemical compounds extend lengthwise along the shank of the bolt in circumferentially spaced areas, such as indicated in FIG. 2 of the patent. The chemical compounds that are used are capable of polymerizing or copolymerizing when brought together, such as rubber compounds or epoxy resins, all as explained in the patent. The particular compounds used form no part of the present invention, which is directed solely to lapparauts for applying the compounds 'to the fasteners.
It therefore is among the objects of this invention to provide means by which reactive compounds can be applied to the threaded shank of a fastener rapidly, inexpensively and easily.
In accordance with this invention a housing is provided with a straight passage through it having a rear end and a front end. Slidably mounted in this passage is a piston that projects from its rear end. Means are connected with the rear end of the piston yto position its front end in the front end of the passage to close it. The housing is provided at opposite sides of the passage adjacent the front end thereof with chambers extending along the passage and opening into it. The inner sides of the chambers are spaced apart and normally are closed by the piston. The housing has an inlet por-t for each chamber, and means are provided for delivering a different chemical compound to each port under pressure to maintain the chambers full of those compounds. The piston is movable rearwardly when its front end is engaged by a fastener shank in line with it and having a diameter no lgreater than the diameter of the piston. Consequently the fastener can enter the passage to receive coatings of the chemical compounds in two spaced bands extending lengthwise of the fastener. When the piston is moved forward again, the coated fastener is ejected from the passage.
The preferred embodiment of the invention is illustrated in the accompanying drawings, in which FIG. 1 is a side view of my applicator, mostly in vertical section;
FIG. 2 is a similar view, showing a bolt being coated;
FIG. 3 is an enlarged vertical `.section through the coating housing taken on the line III--III of FIG. 2 but with the bolt absent;
FIG. 4 is an enlarged horizontal section taken on the line IV--IV of FIG. 2;
FIG. 5 is an enlarged horizontal section taken on the line V-V of FIG. 2, with the bolt removed; and
FIG. 6 is an enlarged side view of a bolt coated by my applicator.
Referring to the drawings, the applicator housing includes a metal block 1, usually cylindrical, that is provided with an axial passage 2 extending through it from end to end. This passage has a diameter great enough to receive the threaded fasteners that are to be coated, preferably with a slight clearance around them. Although the block can be used on its sides, it is more satisfactory in an upright position as shown. Slidably mounted in the block passage is a piston 3 that is in `the form of a rod long enough to extend entirely through the block and project from its rear or upper end. Assuming that only two chemical compounds are to be applied with this device, the lower part of the block is provided at opposite sides of its central passage with a pair of vertical chambers 4 and 5, preferably extending upwardly from the lower or front face of the block. The inner sides of the chambers open into the central passage, while their outer sides are open at the periphery of the block. When the piston is in its lower position as shown in FIG. l, with its front end closing the front or lower end of the passage, the inner sides of the two chambers are spaced apart by the piston and normally are closed by it.
To close the bottoms of the block chambers, a circular bottom plate 7 is fastened by screws 8 to the bottom of the block. This plate projects radially from the block and for-ms a retaining member which supports a sleeve 9 that snugly encircles the block and extends a s'hort distance up above the top of the chambers. The sleeve closes the outer sides of the chambers. It is held down tightly against the bottom plate by means of a nut 10 screwed on the threaded upper end of the block and preferably pressing a yoke 11 down against the sleeve. The nut, yoke and bottom plate also form parts of the applicator housing. The yoke is supported by a bracket 12 that is attached to a suitable support for supporting the housing. The sleeve is provided at the outer side of each chamber with an inlet port 13, in which a tube 14 is screwed, the opposite end of the tube being connected to suitable means (not shown) for delivering a plastic chemical compound 15 or 16 to the adjoining chamber under constant pressure. When the piston is in its lower position it prevents the compounds in the two chambers from mixing.
The applicator may be used by aligning a screw or bolt 1S with the lower end of the lowered piston as shown in FIG. 1, and then simply raising the threaded end of the bolt to push the piston upwardly in passage 2 so that the threaded shank of the bolt takes the place of the piston between the two chambers `as shown in FIG. 2. The opposite sides of the bolt therefore are exposed directly to the chemical compounds in the two chambers, and the pressure behind the compounds forces them forward between the screw threads so that when the bolt is removed from the housing its threaded shank is provided with a pair of circumferentially spaced bands 15a and 16a of the chemical compounds extending lengthwise along it,
as shown in FIG. 6. The bolt is not left in the housing long enough for the viscous compounds to ilow laterally around it and meet. As the bolt is removed, the piston is lowered with it to keep the two compounds apart. EX- cess plastic may be wiped from the bolt as it is withdrawn from the housing, by means of a resilient wiping ring 19 `mounted in a recess 20 (FIGS. 3 and 5) in the bottom of block 1 around the lower end of the central passage. The ring is supported by the bottom plate and snugly engages the bolt. The chemical compounds can be kept away from the end threads of the bolt, so that a nut can be started on the bolt more easily, by providing the front end of the piston with a large recess 21 that receives the end portion of the bolt and thereby covers its threads. This recess also centers the bolt in passage 2.
For easier operation of the applicator and best results it is desirable that the piston be :raised in the housing passage, not by the pressure of the bolt against it, but by power means connected with the upper end of lthe piston. As shown in FIGS. 1 and 2, such means may include a double acting air cylinder 23 rigidly mounted above piston 3 and containing a piston of its own which has ,la downwardly extending piston Irod 24 suitably conneoted to the upper end of the piston below it. Air
under pressure can be admi-tted and exhausted from the opposite ends of the cylinder by means of electric valves and 26, the lower one of which is opened to air pressure automatically or by a suitable manual operation when the bolt is engaged with the lower end of the piston. At the same time, the upper valve exhausts to atmosphere. The piston then is slowly raised or retracted in the housing by piston rod 24 as the operator maintains the bolt in contact with its lower end. When the piston has risen to the desired height, as shown in FIG. 2, it may trip a limit switch 27 that controls the upper valve 26 to admit air pressure to the upper end of the cylinder tio push the piston back down again, while the lower valve connects the lower end of the cylinder with the atmosphere.
Preferably, piston 3 is provided with an axial bore in which a small rod 30 is slidably mounted. 'The upper end of this rod projects above the piston and the lower end carries a head 31 in recess 21. When a bolt is inserted in this recess while the piston is in its lower position, the head and rod are moved up in the piston so that the upper end of the rod will close an electric switch 32 rigidly mounted inside of a switch housing 33 screwed onto the upper end of the piston. This housing is supporte-d by pis-ton rod 24 from the cylinder above it. The switch is connected with the lower valve to cause it to admit air pressure to the lower end of the cylinder, whereby the simple step of inserting the bolt in recess 21 sets the applicator in operation.
I claim:
1. An applicator for applying a pair of circumferentially spaced bands of chemical compounds lengthwise along the shank `of a fastener, said applicator comprising a ,housing provided with a straight passage therethrough having a .rear end and a front end, a piston slidably mounted in the passage and projecting from said rear end, means operatively connected with the rear end of the piston Afor normally positioning its 'front end in the r-ont end Iof the passage to close it, the housing being provided at opposite sides of said passage adjacent the front end of the passage with chambers extending along the passage and opening into it, the inner sides of said chambers being spaced apart and normally being closed by the piston, the housing having an inlet port for each chamber, and means ttor delivering a different chemical compound Ito each port under pressure to maintain said chambers full of the compounds, the piston being movable rearwardly when its front end is engaged by an axially aligned fastener shank having a diameter no greater than the diameter of the piston, whereby the fastener can enter said passage to receive coatings of said compounds in two spaced bands extending lengthwise of the fastener.
2. An applicator according to claim 1, including a resilient wiping ring mounted in the front end of said passage and having an inner diameter slightly smal-ler than the diameter of the passage.
3. An applicator according to claim 1, in which the front end 'of said piston is provided with a large recess adapted to receive the tip of the shank of a lfastener.
4. An applicator according to claim l, in which said 'housing includes a block provided with said passage and chambers, and a sleeve surrounding said block and closing the outer sides of the chambers, the sleeve being provided with said inlet ports.
5. An applicator accor-ding to claim 4, including a retaining member secured to the front end of said block and engaged by the front end of said sleeve, the block having an externally :threaded portion projecting from the lrear end of the sleeve, and a nut screwed onto said threaded portion for pressing the sleeve against said retaining member.
6. An applicator according to claim l, including fluid operated pressure means operatively connected with the piston, a normally closed valve controlling delivery of pressure fluid to said fluid pressure operated means to retract the piston, and means for opening said valve when the tip of a fastener is brought intro engagement with the front end of the piston.
7. An applicator according to claim 6, including a normal-ly closed electrically operated valve controlling delivery of pressure fluid to said uid pressure operated means to return said piston tfrom its retracted position, an electric limit switch connected with said last-mentioned valve, and means movable rearwardly with the piston for operating said switch.
S. An applicator according to claim 1, in which said piston is provided with an axial bore therethrough and with a large recess in its front end, said applicator inclu-ding a push rod slidably mounted in said bore and projecting from the opposite ends thereof, a head on the end of said .rod in said recess, uid pressure operated means operatively connected with the piston, a normally closed electrically operated valve contnolling delivery of press-ure uid to said fluid pressure operated means to retract the piston, and an electric switch connected with said valve for opening it and operated by the rea'r end of the rod when the rod is pushed rearwardly by the tip of a fastener inserted in said piston recess and pushed `against said head.
References Cited by the Examiner UNlTED STATES PATENTS 924,452 6/1909 Graham 118-404 CHARLES A. WILLMUTH, Primary Examiner.

Claims (1)

1. AN APPLICATOR FOR APPLYING A PAIR OF CIRCUMFERENTIALLY SPACED BANDS OF CHEMICAL COMPOUNDS LENGTHWISE ALONG THE SHANK OF A FASTENER, SAID APPLICATOR COMPRISING A HOUSING PROVIDED WITH A STRAIGHT PASSAGE THERETHROUGH HAVING A REAR END AND A FRONT END, A PISTON SLIDABLY MOUNTED IN THE PASSAGE AND PROJECTING FROM SAID REAR END, MEANS OPERATIVELY CONNECTED WITH THE REAR END OF THE PISTON FOR NORMALLY POSITIONING ITS FRONT END IN THE FRONT END OF THE PASSAGE TO CLOSE IT, THE HOUSING BEING PROVIDED AT OPPOSITE SIDES OF SAID PASSAGE ADJACENT THE FRONT END OF THE PASSAGE WITH CHAMBERS EXTENDING ALONG THE PASSAGE AND OPENING INTO IT, THE INNER SIDES OF SAID CHAMBERS BEING SPACED APART AND NORMALLY BEING CLOSED BY THE PISTON, THE HOUSING HAVING AN INLET PORT FOR EACH CHAMBER, AND MEANS FOR DELIVERING A DIFFERENT CHEMICAL COMPOUND TO EACH PORT UNDER PRESSURE TO MAINTAIN SAID CHAMBERS FULL OF THE COMPOUNDS, THE PISTON BEING MOVABLE REARWARDLY WHEN ITS FRONT END IS ENGAGED BY AN AXIALLY ALIGNED FASTENER SHANK HAVING A DIAMETER NO GREATER THAN THE DIAMETER OF THE PISTON, WHEREBY THE FASTENER CAN ENTER SAID PASSAGE TO RECIEVE COATINGS OF SAID COMPOUNDS IN TWO SPACED BANDS EXTENDING LENGTHWISE OF THE FASTENER.
US289256A 1963-06-20 1963-06-20 Chemical compound applicator for threaded fasteners Expired - Lifetime US3266459A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US289256A US3266459A (en) 1963-06-20 1963-06-20 Chemical compound applicator for threaded fasteners
GB8680/64A GB995994A (en) 1963-06-20 1964-03-02 Chemical compound applicator for threaded fastener
DES90077A DE1265628B (en) 1963-06-20 1964-03-18 Device for applying strip-shaped axial fluid coatings to rod-shaped objects
FR968372A FR1389858A (en) 1963-06-20 1964-03-23 Device for applying a chemical coating to threaded fasteners
NL646403109A NL145472B (en) 1963-06-20 1964-03-23 A DEVICE FOR APPLYING DISTANCED IN THE CIRCULATORY DIRECTION OF PLASTIC LINES OF DIFFERENT CHEMICAL COMPOSITIONS.
BE649462A BE649462A (en) 1963-06-20 1964-06-18
LU46360D LU46360A1 (en) 1963-06-20 1964-06-19

Applications Claiming Priority (1)

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US289256A US3266459A (en) 1963-06-20 1963-06-20 Chemical compound applicator for threaded fasteners

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US3266459A true US3266459A (en) 1966-08-16

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US289256A Expired - Lifetime US3266459A (en) 1963-06-20 1963-06-20 Chemical compound applicator for threaded fasteners

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US (1) US3266459A (en)
BE (1) BE649462A (en)
DE (1) DE1265628B (en)
GB (1) GB995994A (en)
LU (1) LU46360A1 (en)
NL (1) NL145472B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889628A (en) * 1973-08-13 1975-06-17 Fischer Ag Georg Fluid material applicator
US4079693A (en) * 1976-01-05 1978-03-21 Loctite Corporation Application for coating internal surfaces
US4079692A (en) * 1976-01-05 1978-03-21 Loctite Corporation Coating applicator
US20110250347A1 (en) * 2010-04-07 2011-10-13 Xue Feng Ni Method and apparatus for forming contact gaps in continuous welding electrode
US10724568B2 (en) * 2018-09-14 2020-07-28 Honda Motor Co., Ltd. Sealant application system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US924452A (en) * 1906-12-13 1909-06-08 Utica Ind Company Art of forming solder-edged caps.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE697358C (en) * 1938-02-12 1940-10-11 A W Faber Castell Bleistift Fa narrow sides of pens and other stick-shaped workpieces

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US924452A (en) * 1906-12-13 1909-06-08 Utica Ind Company Art of forming solder-edged caps.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889628A (en) * 1973-08-13 1975-06-17 Fischer Ag Georg Fluid material applicator
US4079693A (en) * 1976-01-05 1978-03-21 Loctite Corporation Application for coating internal surfaces
US4079692A (en) * 1976-01-05 1978-03-21 Loctite Corporation Coating applicator
US20110250347A1 (en) * 2010-04-07 2011-10-13 Xue Feng Ni Method and apparatus for forming contact gaps in continuous welding electrode
US10724568B2 (en) * 2018-09-14 2020-07-28 Honda Motor Co., Ltd. Sealant application system

Also Published As

Publication number Publication date
BE649462A (en) 1964-10-16
NL6403109A (en) 1964-12-21
DE1265628B (en) 1968-04-04
NL145472B (en) 1975-04-15
LU46360A1 (en) 1972-01-01
GB995994A (en) 1965-06-23

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