US1358326A - Calking-tool - Google Patents

Description

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:L7 jg ATTORNEYS L. PAULERO. CALKING TOOL. APPLICATION man JuLv n, i918.

Patented N ov. 9, 1920.

2 SHEETS-SHEET 2.

`UNITED sTATEs PATENT oFFicE. y

LOUIS PAULERO, 0F PETERSBURG, VIRGINIA, ASSIG-NOR TO AMERICAN ELECTRIC TOOL COMPANY, INCORPORATED, OF PETERSBURG, VIRGINIA, A CORPORATION OF VIRGINIA.

GALKING-TOOI.

Specivcation of Letters Patent.

Patented Nov. 9, 1920.

To all whom t may concern.:

Be it known that I, Lonis PAULEeo, a citi- Zen of the United States, and a resident of Petersburg, in the county of Dinwiddie and State of Virginia, have invented'` certain new and useful Improvements in Calle ing-Tools, of which the following is a speciiication.

My invention relates to improvements in calking tools, and it consists in the construc tions, combinations and arrangements herein described and claimed.

`An object of my invention is to provide a tool for calking seams and more particularly the seams of` wooden vessels, wherein the oakum or other calking `material is mechanically manipulated to form a loop or tuck in the oalrum strand precisely as is done when the oalriim is manually introduced beneath the calking iron.

Another object of the invention is to Aprovide a callring tool having a positively operated tucling mechanism which isso ad justed as to render it sensitive to varying seam widths, consequently forming tucks of corresponding` sizes, precisely as is done by the finger of the hand when the oakum strandand the seam are under manual observation. Y

further cbj ect of the invention is to provide a callring tool wherein the-oakum strand Y is automatically fed and the tuck is automatically formed, by a direct and positive mechanical action from the callring iron.

A. further object of the invention is to provide a novel resilienty supportior the hammer support and the calkingiron.

Other objects and advantages `will appear in the following specification, referencebeing had to the accompanying drawings, in which: 4 f ,3

Figure 1 is` a .vertical section ofthe im- Fig. 2 is a detailV front elevation-of the calking tool showing the tucker arms Vand side oakum feeder, 1 i

Fig. 3 is a diagrammatic sectionalview showing the 'formed tuck about to be driven into the seam, p y Fig. i is an inverted plan view of the tuching blade,

Fig. 5 is a side elevation showing the side oalnim feeder,

' Fig. 6 isa diagrammatic sectional view illustrating therformation `of a relatively large tuck for a wideseam, l

Fig. is a diagrammatic sectional view illustrating the formation of a relatively small tuck for a narrow seam,

Fig. 8 is a cross section of the rea-i' axle of the calking tool carriage, and

Fig. 9 is a vertical section" tion ci' the calking tool. v-

The subject matter of the present invention is an improvement over my copending applications for callring tools #-1 and #2, respectively iiled on January 16, 1918, Serial No. 212,127, and Mayi, 1918, Serial No. 232,925. The novelty in the present invention lies more particularly in the peculiar tucking mechanism. It has been demon,-

of a niodiiicastrated in actual practice,that a long period of training is required vbefore a `man can skilfully form the tuck in an oakum strand so as to accommodate the varying widths ,of

vseams along the side of a vessel.

Obviously it requires a iractised eye, as well as linger, to loop the strand over far enough to form a tuck of the requiredsize, so that when it is driven into the seam the scam will be filled even with the top throughout the length thereof. It is to replace this human element and to replace` the uncertainty of the ability ofthe operator even after a long period of training,` with a device of precision which at `the same time operates rapidly. i Referring then to the appended drawings, it will be observed that the tucking blade 1 moves in the arc ofA a circle beneath `the feederV 2 through whicht'he oakum Qdsfed in a continuous strand to the calling iron 3.

The tucking` blade 1 has a resilient or ieldino mounting on the bridged4 which D 2D L.

connects the tucker arms `5 at, the bottom. The tuckerk arms are pivotally mounted on the pivots 6 which are screwed into the` sides of the main frame T. The constructionof the pivotal mounting isshown in Fig.` 5. Here it will be observedthat the pivotscrews 6 have an intermediate bearing portion of a diameter larger than the threaded endV and smaller than the portion adjacent to the heads upon which the tucker springs 8 are coiled. This arrangement of the pivot the tucking blade 1 under the influence of the springs 8 which are so connected to the tucker arms as to normally retract the tuck# ing blade from the channel 1G in which the calking iron 3 operates. A square slide block 11 occupies the channel 10 and has tucking pins 12 which operate in the opening 13 of `eachfof the bifurcated heads 14 of the tucker arms,- during a portion of the stroke of the calking iron. In this connection it will be observed in Fig. 3, that the calking iron is made a part of the slide block 11. Obviously if it be so desired, these adi jacent parts may be made separate if practice indicates such to be practicable. Y

The `action of forming the tuck Tin Fig. 3 is automatically and mechanically performed through the'operation of the calking iron 3 on a portionof the return stroke thereof. Fig. 3 just referred to, shows the tucker arms 5 still against the stops 9, and the tucking blade 1 retracted from the channel 10 under the influence of the springs 8. llVhen the upward stroke of thek calking iron. is nearly completed, the tucking pins 12 will enter the openings 13 between the upper and lower lips 15 and 16 of the head 14, and drive the tucking blade across the chanfnel 10i-to form the tuck. `Fig. 3 shows the tuck ashaving been formed, the tucking 18 on abutment screws 19.`

blade 1 retracted from the channel, andthe calking iron 3 in the act of driving the tuck T into Vthe seam S between two planks of a wooden vessel.

Y Fig. 2 shows the tucking blade 1 in the inner extremity of its movement described j in connection with Fig. 3. Fig. 1 shows the .same position and .also illustrates how`the tuck T is initially formed.- When the pins l2leave the openings 13 on the down stroke ofthe calkingrir'on', the springs 8 force the tucking blade l1 out of the path of the calkingiron, and the tucker arms 5 into contact with the stops 9. This action is falso as,- sisted' initially by the movement of the tucking pins over the lower lip 16.

The tucking blade 1 @has a transverse Hangs 17 at the back, which normally rests against the bridge 4f by virtue of the springs j The tucking blade 1 is held in place on the bottom of the bridge 4 1: by means of holding screws 2O lwhich enter slotsv 21 in the tucking blade.

The screws are so adjusted as t0 hold'the Yiso that the sliding function of the tucking blade can'be performed.

In this connection attention is directed to Figs. 6 and 7, of which F ig. 7 illustrates the circumstances under which the sliding function of the tucking bladeoccurs. The tucking blade in Fig. 6 is adjusted to move a distance equalto the width of the channel 10. This distance is approximately threequarters of an inch. This throw of the tucking blade forms a tuck T of just .about the right size to properly fill an ordinary and relativelywide seam S. It has been found in actualpractice in the use ofthis calking tool, that the tension of the oakum strand between the inner `edge of the feeder 2 and the nearest edge of the seam S, is considerably greater when the seam is relatively narrow.

rThe increased tension inthe oakum strand forms amore rigid abutment as it were, for the edge of the tucking blade, so that :instead of permitting the tucking blade to make a full stroke` across the channel 10, the tucking action is retarded but is taken upV by the compression cf the springs -13 on the butrpent screws 19 as clearly shown in The action just described has been found to work out in actual practiceV and efficiently ,takesy the place of the manual operations which now customarilyV must bey followed to produce the same result. Thus it may bel said that the tucks. T are automatically formed of just theright size te fill the seam Arclamp 27 at the top of the hammer sup.-

port 26` is adapted toV secure the calking tool on the end of a mechanically operated hammer of either the type illustrated inmy co-pending application for a patent Von an electric hammer, filed December` 5, 1917, Serial No.v 205,503, or any other type. The spring' 23 is strong enough to support the weight of` the hammer and. under normal conditions,presses the shoulder of the cup l25V against the closure cap 28 which is screwed into the threaded end of the casing 22. 'I f A Screwed in the cap 28 is a pin 29 which enters the slot 30 in one sideV of the hammer supportv 26 and prevents it from 'turning A plurality V'of holes 31 in the base of the 'slot 30 permit the adjustment of the stop 32.011 the hammer support. This stop is for the purpose of gaging the depthrto which .the calking iron 3 may be forcedinto the yinto the region of any one of the holes.

The stein 34 which. carries the calking iron at the bottom, has a reduced portion which slides in the bore ofthe hammer support V26. A pair ot nuts 35 are screwed on the threaded end of the stem 34 adjacent tothe reduced portion. These nuts. occupy the cup 25. The inner spring 24 presses the nuts 35 against the base of the cup and serves to return the calking iron 3 after each stroke of the hammer on the end oi' the stem 34. In this connection it is to be ob served that the upper end of the stem is further reduced to fit in the chuck of the hammer. Y

1Wheels 36 and 37 at the front and rear of the main frame 7 of the calking` tool, form a part of the carriage illustrated in Fig. 5. The front wheels have an integral tracking wheel 88. A tracking wheel 39 is separately mounted over a bushing on the axle 40 'at the rear of the carriage. Similarly, the wheels 37 are mounted on bushings on the same axle. The frontend rear tracking wheels keep the calkingrtool in alinement with the seam so that the calking iron 3k always strikes in the center.,

T he operation.

oakum strand is readily cut or broken. Thisv necessitates the stopping of the work and the re-threading of the oakum into the machine. As has already been fully explained7 the device herein described accomplishes the same result as is accomplished manually.

It is thought unnecessary to repeat in detail, the manner in which the tuck T is formed. It is thought sufficient to say that the springs 18 on the abutment screws 19 render the tuckingblade 1 sensitive to the varying widths of the seam S, so that the throw of the tucking blade is gaged` each 'me by the width of the seam which is then worked upon. When the seam is narrow as shown in Fig. 7,the tension of the oakum strand between the adjacent edges of the seam and the feeder 2, is greater than when the seam is wide as in Fig. 6, with the result that more resistance to the movement of the calking blade occurs. This increased resistance is taken up in the springs 18.

The modiication in Fig. 9 shows a slightly diii'erent arrangement of the calking tool. The stem 34 has `a reduced and threaded end at the top by'means of which the stem can be screwed directly into the piston 41 of the mechanical hammer. Of course the stem may be connected to the piston by any other suitable means which actual practice may suggest. The hammer support 26 also slides within the casing 22, but instead of two springs inside of the casing, only the supporting spring 23 appears.

T hespring 24 abuts a member 35 which VVisthe equivalent of the nuts 25 in Fig. 1.

The spring 24 exerts sufficient upward pressure against the butfer' to withstand the blows of the piston 41. The remaining structure of the modification is substantially like the structure in Fig. 1 as will be found by a comparison of the reference characters.

The tucking mechanism is also of a slightly modified construction. The tucker arms 5 terminate in lugs 42 beyond the pivots 6, and these lugs coperate with the tucking pins 12 similarly as the pins 12 coperate with the heads 14 in Fig. 2. therwise, the construction and operation of the tucking mechanism in Fig. 9, is the same as that in the prei'erred form of the invention.

I claim: I

1. A calking tool, comprising a calking iron for driving oakum into a seam, and means positively actuated by the, engagement of a portion of the calking iron with a part of said means during a portion of the stroke of the calking iron, for automatically forming a tuck beneath said iron crosswise of the seam.

2. In a calking tool, a calking iron ior driving oakum into a seam, means positively actuated by the contact of a portion of the calking iron with a part of said means during a portion of the stroke of the calking iron, for automatically beneathsaid iron,"and means for periodically retracting said tuck-forming means from the path ofthe calking iron.

3. A calking tool, comprising a calking iron for driving oakum into a seam,` a tucker including a blade., positively actuated throughicontact therewith by a portion of the calking iron during a portion ot the return stroke ot the iron, thereby thrusting the 'blade beneath the iron and automatically forming a tuck in the oakum strand across the seam .1 and means coperating with. the

tuckerblade for automatically regulating the size of the tuck in accordance with the Y varying widths ofthe seam.

4. In a calking tool, acalking iron'ior driving 'oakum intoa seam, means pivoted adjacent to the calking iron and movable across the ends ot the calking iron to form a tuck in a strand of oakum, means` embodied in said tuck-forming means having a yielding action sensitive to various devrees of tension insaid strand caused by arying widths of VJthe seam, .thereby form ing tucks of various sizes, and means extend forming. a tuck ing from the tuck-forming means into the path of a portion of the calking iron,arranged to be engaged during a portion of the return stroke of the iron to actuate said tuck-forming means.

5. In a calking tool, a calking iron for driving oakum into a seam, means pivoted adjacent to the calking iron and movable across the end of the calking iron to form a tuck in a strand of oakum, means embodied in said tuck-forming means having a yielding action sensitive to various degrees of tension in said strand caused by varying widths ofthe seam, thereby forming tucks of various sizes, means extending from the tuck-forming means into the path of a portion of the calking iron, arranged to be engaged during a portion of the return stroke of the iron to actuate said tuck-form- Y ing means, and resilient means for holding said tuck-forming means outv of the path o'f the calking iron during thecalking stroke 'and during the period of disengagement between said extending means' and the cooperating portion of the calking iron.

6. In acalking tool, a calking i'ron yfor ydriving oakum into a seam, tuck-forming means cooperating with the iron and positively actuated thereby, resilient means for holding the tuck-forming means in a retracted position, and stops for limiting the influence of said resilient means and lenabling the independent holding of said tuck forming means during the operation of driving the calking iron into a deep seam.

1 "7?. A calking tool, comprising a wheeled mainframe, a calking ironreciprocatively mounted thereinfor driving .oakum into a seam, a tuck-forming mechanism for forming a tuck in a strand of oakum beneath the calking iron after each return vstroke of said iron, mounted and operating laterally of the main frame, and a laterally disposed oakum feeder above said tuck-forming mechanism.

8. A calking too'l, comprising means for formingtucks of a size to accord with varying seam widths, consisting of a calking iron, pivotally mounted tucker arms including a bridge, an engageable y.portion beyond the pivots, tucking VVpins on-the calking Airon for engaging said portions to drive saidarms inwardly, a tucking blade with a flange, means providing a limited movement of the tucking blade on the bridge, an oakum feeder, and abutments with interposed resilient means coasting with the tucking blade flange and-enabling a retrograde movement of the tucking blade onY the bridge, to.v compensate for an increase in resistancerinan oakum strand of increased tension, between the callring ironv occupying the channel and provided with a non-circular slide block, tuckcasing and limit the downward thrust of the hammer support throughv pressure on the ing pins carried by the slide block, a pivotally mounted tuck-forming-mechanism actuated by said tucking pins on the Vreturn stroke and operating beneath the calki'ng iron, a resilient stem support inthe casing 40 for returning the calking iron to the normal position, a hammer support. adapted to be clamped to a mechanical hammer for securing the calking tool to said hammer, a cup included in said hammer support occupying a position in said casing, an abutment carried by the stem andl occupying the cup, and a resilient support contacting the cup and upholding the hammer support.

l0.' A calkingtool, comprising a main frame and arcasing, a hammer support telescopically mounted in the casing, resilient means concealed in the casing andholding the hammer support up, means included in the hammer supportY for'attaching the calking tool toa mechanicalhammer to constitute the `calking tool as an attachment thereto, and stopping means on the hammer support, arrangedto engage the top of the hammer.` 1 v f j ll. In a calking tool, a main frame having a channel and a casing, a stemhaving a calking ironoccupying the channel and provided With the non-circular slide block, tucking pins carried by the slide block, a pivotally mounted tuck-forming mechanism actuated by said tuckingf pins .on Vthe return stroke and operating beneath the calking iron, a ham-mer support including an abutment member occupying the casing, a resilient support therefor, an abutment member carried by the stem and occupying a position in a portion of the hammer support, and a resilient support between said abutment member and the abutment member in said casing.

l2. A calking tool, comprising a main frame and a casing, a hammer support telescopically mounted in the casing,resilient means concealed in the casing and holding the hammer support up, means included in Varranged to engage the top of the casing and limit the downward thrust ofl the hammer support lthrough pressure on the hammer, a oalkingironhaving a stein extending through the casing and hammer support to the ham- Vmer, and means providing a resilient support for the stem to act as a resilient support for the stem to absorb-the shocks of the, blows of the hammer.

18. A calking tool, comprising a calking iron for driving oakum into a seam, means positively vactuated by the contact of the Y portion ofthe Ycalking iron with a part of amaai/26 said means during a portion of the stroke of the calking iron for automatically forming a tuck beneath said iron, and means for automatically withdrawing said tuck-forming means out of the path of the callring iron when said positive actuating contact is severed.

141-. Instrumentalities embodied in a calll ing tool for automatically forming tucks 1n a strand of calking material across a seam of increasing or diminishing sizes to correspond to the increase and decrease in the Width oi' the seam; comprising a calking iron; and a swinging tucker, comprising a portion 'engageable by a part of the calking iron near the end of the return stroke to swing the tucker, and a tuck-making portion arranged to yield on engaging the calking material When it is under tension; as in calking a narrow seam and not to yield on engaging the calking material when itis loose as in calking a Wide seam.

15. A swinging tucker for a calking tool,

comprising a tuck-forming blade mounted on a tuclrer; and resilient means forming a part of said mounting, enabling the blade to yield and recede When presented a stili oakum strand thus forming a small tuck, and holding the blade immovable on the tuclrer when presented to a loose oakum strand thus forming a large tuck.

16. In a calking tool, the combination of a frame providedivith means to guide calking material to a seam, a reciprocative tucking blade Jfor forming tucks in said material, means for supporting and guiding said blade to cause a bodily edgetvise movement thereof, and means operative to reciprocate said blade.

17. In a calking tool, the combination of a frame provided with means to guide calking material to a seam, a reciprocative calking element Jfor driving said material into a seam, a reciprocative tucking blade for forming tucks in said material, means for supporting and guiding said blade to cause a bodily edgeivise movement thereof, and means controlled -by said element during the operation thereof for reciprocating said blade.

18. In a calking tool, the combination of a frame provided with means to guide calliing material to a seam, a pivoted reciprocative member, a tucking blade carried vby said member and moved edgeivise thereby when said member is moved for forming tucks in said material, and means operative to reciprocate said member.

19. In a calking tool, the combination of a frame provided With means to guide calking material to a seam, a reciprocative calking element for driving said material into a seam, a pivoted reciprocative member, a sucking blade carried by said member and moved edgevvise thereby when said member is moved for Jforming tucks in said material,A and means controlled by said element durJv ing the operation thereof for reciprocating said member.

20. In a callring tool, the combination of a frame provided with means to guide calking material to a seam, a reciprocative member, a yielding tucking blade carried by said member for forming tucks in said material, and means operative to reciprocate 'said member, said blade being adapted to yield relatively to said member under a predetermined pressure against said material durin p the tucking operation.

21. n a calking tool, the combination of a frame provided With means to guide calking material to a seam, a reciprocative calking element for driving said material into a seam, a reciprocative member, a yielding tucking blade ca rried by said member for forming tucks in said material, and means controlled by said element during the operation thereof for reciprocating said member, said blade being adapted to yield relatively to said member under a predetermined pressure against said material during the tucking operation.

22. In a calking tool, the combination of a frame provided with means to guide calking material to a seam, a movable tucKing device having a yielding part adapted to tucking operation.

LOUIS PAULERO.

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