US3359032A - Carpet stretcher - Google Patents

Carpet stretcher Download PDF

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Publication number
US3359032A
US3359032A US507936A US50793665A US3359032A US 3359032 A US3359032 A US 3359032A US 507936 A US507936 A US 507936A US 50793665 A US50793665 A US 50793665A US 3359032 A US3359032 A US 3359032A
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US
United States
Prior art keywords
carpet
guard plate
plate
pins
pin
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
US507936A
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English (en)
Inventor
George A Kochanowski
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.)
KINKEAD INDUSTRIES
KINKEAD INDUSTRIES Inc
Original Assignee
KINKEAD INDUSTRIES
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 KINKEAD INDUSTRIES filed Critical KINKEAD INDUSTRIES
Priority to US507936A priority Critical patent/US3359032A/en
Priority to BE692952D priority patent/BE692952A/xx
Application granted granted Critical
Publication of US3359032A publication Critical patent/US3359032A/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
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G27/00—Floor fabrics; Fastenings therefor
    • A47G27/04—Carpet fasteners; Carpet-expanding devices ; Laying carpeting; Tools therefor
    • A47G27/0487—Tools for laying carpeting
    • A47G27/0493—Carpet-expanding devices, e.g. stretchers

Definitions

  • ABSTRACT F THE DISCLOSURE A carpet stretcher of the type commonly referred to as a kicker having a set of carpet engaging pins with a guard plate and a stop in the path of movement of the plate to position it for the desired degree of pin extension.
  • a carpet stretcher having a set of carpet pins which are normally shielded but which are automatically exposed or extended to the desired degree when the usual downward force is applied for gripping of the carpet before kicking or application of the stretching force.
  • FIGURE 1 is a top view, in partial section, of a carpet stretching device, or kicker, constructed in accordance with the present invention.
  • FIG. 2 is a fragmentary perspective showing the external appearance of the head portion of the device shown in FIG. l.
  • FIG. 3 is a fragmentary section looking along the line 3 3 in FIG. 1 and with the tips of the pins enclosed or shielded.
  • FIG. 4 is a section similar to FIG. 3 but showing the guard plate depressed and the pins exposed under working conditions.
  • FIG. 5 is a fragmentary top view with the upper portion of the head broken away to reveal the guard plate return spring and spring mounting.
  • FIG. 6 shows a transverse section taken along the line 6--6 in FIG. 5.
  • FIG. 7 shows the underside of the head with the guard plate broken away and taken along line 7 7 in FIG. 3.
  • FIG. 8 is a bottom view of the guard plate and looking along line 8 8 in FIG. 3.
  • FIG. 9 is a diagram showing the effect of the protuberances on the guard plate.
  • FIG. l() is an enlarged fragmentary section taken through the handle of the device and looking along line 9-9 in FIG. 1.
  • FIG- URES 1 and 2 a carpet stretcher in the form of a kicker having a head 10, an integral handle 11 and a knee pad 12.
  • the head includes a hollow frame member 15, which may be an aluminum casting, having a side wall 16 defining an internal space 17 and terminating in a lower edge 18.
  • integral mounting pads 21e24 having mounting screws 25-28 threaded therein.
  • a pin plate 30 Contained within the space 17, and secured by the screws 25-28, is a pin plate 30 having pins arranged in parallel rows 31-36 inclusive (see FIGS. 6 and 7) projecting forwardly as well as downwardly and preferably terminating in a common plane 37 (see FIG. 4).
  • the pins are of hardened steel pressed into angled openings formed in the underside of the pin plate. To facilitate drilling the holes at an angle, the bottom surface of the pin plate may be stepped as indicated at 38.
  • a guard plate 40 is provided underlying the pin plate and having longitudinal slots 41- 46 providing clearance for the rows of pins 31-35 respectively.
  • Such guard plate has an undersurface 47 lying in a plane and an upraised ange or rim 48 which surrounds, and nestingly receives, the lower periphery 18 of the frame member 15. Sufficient clearance is provided between the front edges of the two members, as indicated at 49, to accommodate a limited amount of longitudinal motion between them, as will become clear as the discussion proceeds.
  • a parallelogram linkage including short vertical links transversely pinned to the guard plate and pin plate, or frame, respectively.
  • linkage includes vertical links 51-52 located at the forward edge of the pin plate and a vertical link 53 located at the rear edge of the pin plate (see FIGS. 3 and 7).
  • the term vertical is used for convenience to distinguish them from the horizontal elements of the parallelogram, and it will be understood that the links in operation swing from a near vertical position to a near horizontal position.
  • the front edge of the pin plate is relieved to form a central throat 54 anked by forward extensions or brackets S5, 56 respectively.
  • pivot pin 57 transversely mounted in the brackets serves to suspend the links 51, 52.
  • the guard plate has integral pin mounts or bosses 61, 62 engaged by a pivot pin 63.
  • the third vertical link 53 is engaged by a pivot pin 70 which extends transversely across a throat 71 formed in the pin plate.
  • a pin 72 is arranged transversely in upstanding bosses 7 3, 74 which are integral with the guard plate and which are bridged by an integral bridge 75 (see FIG. 6). It will be understood that the pivot pins which support the links are equipped with snap rings or equivalent at the ends to hold them captive.
  • the frame In order to engage the guard plate to deiine a working position, the frame includes a bottoming stop which is arranged in the path of inward movement of the guard plate.
  • the stop is in the form of an adjusting screw 80 having a tip 81 and a knob 82 at its upper end.
  • the screw is threaded into a tapped hole 83 in a bushing 84 mounted at the center of the pin plate.
  • a coil spring 85 which surrounds the upper portion of the adjusting screw below the knob, insures suicient friction so that the adjusting screw, once set, does not tend to change its adjustment.
  • the frame of the stretcher may be provided with a central cylindrical opening 86 having a diameter which slightly exceeds the diameter of the knob.
  • a spring is provided, interposed between the frame and the guard plate, for biasing the guard plate outwardly to an extended position in which the tips of the carpet engaging pins are protectively surrounded and which is designed to yield when the tool is pressed against the carpet.
  • This function is accomplished in the present instance by a coil spring 90, which is anchored at its ends 91, 92 to the upper side of the pin plate using suitable machine screws, and with the center of the spring being passed about a vertical pillar on the guard plate.
  • the pillar, indicated at 95 is preferably centered on the bridge 75 previously mentioned. Studs 96, 97, projecting upwardly from the bridge, cooperate with the pillar 95 to provide a curved pocket for the central portion of the spring.
  • the guard plate 40 will tend to be urged forwardly and downwardly about the links 51-53 on which it is supported. Such downward movement continues until the tips of the pins are shielded as shown in FIG. 3, whereupon bottoming occurs at stops 98 which tiank the rear link 53 and which are preferably cushioned by suitable pads, or inserts, made of rubber. It will be apparent that with the guard plate occupying its outermost position (FIG. 3) during periods of non-use, the sharpened tips of the pins can do no damage to the user or to other tools or apparatus in the tool bag.
  • the reaction force of the carpet pile causes the guard plate 40 to be swung upwardly about its supporting links 51-53 until the upper surface of the plate bottoms against the lower tip 81 of the adjusting screw, thus holding the guard plate with the sharpened pins extended just the right amount for the carpet being worked on.
  • the operators knee may be swung against the -pad 12 with a hammer-like blow, causing the carpet to be progressively stretched in the forward direction.
  • the guard plate 40 resumes its outermost position urged by the spring 90.
  • spaced protuberances are formed on the underside 47 of the guard plate and occupying a minor fraction of the guard plate area so that localized compressive force is applied to spaced regions of the carpet pile to serve as a more precise reference for the degree of extension of the carpet-engaging pins.
  • the spaced protuberances are in the form of upraised lands 41a-46a surrounding the slots 41-46.
  • the protuberances will tend to penetrate the pile to a depth adjacent the carpet backing. It is found that this provides a more positive support, or base of reference, for the pins, even when using the tool with deep-pile carpet.
  • the ptotuberances make the degree of relative pin extension less critical and the operation of the tool less subject to variations in downwardly applied force than would be the case if the protuberances were omitted.
  • the carpet indicated at will be assumed to have a pile or nap 101 and a durable backing 102.
  • the amount of compressive force for each small unit of area is indicated by the density of the stip pling in this diagram.
  • the function of the protuberances may be described, it desired, in terms of spring rate.
  • spring rate In the case of a carpet having an exceedingly deep pile, even relatively small changes in the force per unit area applied to the upper surface of the pile are effective to change the depth of penetration, i.e., the height at which a load is supported relative to the carpet backing. Such a carpet can be said to have a low spring rate.
  • carpet at the opposite extreme carpet having an exceedingly short and dense ⁇ pile, variations in applied pressure make very little difference in the height at which the load is supported above the backing.
  • Such carpet may be said to have a high spring rate.
  • the spring rate of the long pile carpet is effectively increased to a value which is more characteristic of carpeting having a medium or short pile.
  • the desired amount of pin projection can be more effectively judged by the carpet installer by eying the distance d1 (see FIG. 6) than by eyeing the distance d2.
  • the distance d1. being shorter than the distance d2, may be visually gauged with a higher order of accuracy, especially by an installer of limited experience.
  • protuberances in the preferred embodiment are of slightly different etective heights, this is simply a matter of designers choice and, if desired, the protuberances may be all at the same height relative to the nominal undersurface 47 of the guard plate. Moreover, while protuberances having a certain total projected area are shown in the drawings, the area may be further reduced, or concentrated, and the height of the protuberances fur ther increased, to provide an increased relative penetration for a given applied force, and hence enabling a still further improvement in gauging accuracy.
  • the only 1imi tation is the temporary patterning which may be left in the pile or nap when the tool is removed.
  • such handle is formed in two telescoping parts, an outer tube 111 and an inner tube 112 which may be locked together in an adjusted position by means of a collet 113.
  • a collet 113 is formed with a plurality of fingers as indicated at 114, 115 having enlarged tips 116, 117.
  • Such tips are selectively received in annular grooves 118 75 formed at spaced intervals on the inner tube 112.
  • the collet is provided with a threaded sleeve 120 which holds captive a flange 121 formed on the end of the outer tube.
  • the threaded sleeve 120 is unscrewed permitting the inner tube 112 to be retracted.
  • the collet is then shifted into engagement with an adjacent groove whereupon the inner tube is telescoped into position and the threaded sleeve is again screwed tight.
  • the tool described above has a number of inherent advantages deserving of special mention.
  • the pin plate is rigidly secured to, and bottomed on, the frame 15, the pins may be subjected to large forces without any risk or damage or without risk of cooking of the pin plate.
  • the adjusting screw is subject to purely axial forces and free of any cooking force, and since the adjusting screw is not subjected to the kicking forces, such screw may be of relatively light and inexpensive construction, easily turned by the linger tips of the user.
  • the particular coil spring arrangement produces a novel variation in the restoring force.
  • the spring is effective to maintain the guard plate outwardly extended into its protective position as shown in FIG. 3.
  • the links increasingly occupy a more horizontal, toggled, or on-center position, so that a relatively light force suiiices to maintain the guard plate bottomed against the stop surface 81 at the end of the adjusting screw.
  • a further feature of the device resides in the fact that it has an attractive, suitied appearance in spite of the relative movement between the frame and the guard plate which is arranged below it. Unification is achieved by nesting the walls 16, 48 of the frame and guard plate. It will be apparent to one skilled in the art that this nested relationship may, if desired be reversed by increasing the size of the frame proender so that the wall 16 becomes an overlapping wall.
  • the construction of the head is not limited to use with a tool of a kicker type and if desired, the handle 11 may be extended, for example, to the opposite wall of the room, and provided with means for thrusting tubes 111, 112 outwardly with respect to one another to apply the stretching force to the head.
  • the pin plate has been employed in the following claims in reference to the member 30 which mounts the pins and the member 40 which performs the guarding function, it will be apparent that such term has been employed for convenience only and that the term is applicable to any members performing pin supporting, or guarding, functions respectively, regardless of horizontal dimension. Moreover, if desired, the pin plate may form an integral part of the frame without departing from the invention.
  • the term stop as applied to the means interposed between the frame and the guard plate for limiting the degree of relative extension of the pins beyond the guard plate, has been employed for convenience only to cover means for positioning the guard plate in its working position.
  • the term substantially used in the follow- 6 ing claims with respect to the degree of pin projection is employed to indicate that the tips of the pins need not lie in a precise plane to practice the invention but need only engage the carpet at about the same level.
  • a stretcher for stretching carpet having a pile and a backing
  • the combination comprising a frame having a pin plate mounting a set of sharpened carpet-engaging pins arranged side by side at an angle to the plate and rigidly secured thereto with the tips thereof lying substantially in a horizontal plane, a guard plate arranged below the pin plate, said guard plate being at least substantially coextensive with the pin plate and having openings for clearing the pins, means for coupling the guard plate with respect to the frame for broadwise movement of the plate relative to the plane of the tips, means including an adjustable stop interposed between the frame and the guard plate for limiting the degree of relative extension of the pins beyond the guard plate when the guard plate is seated on the carpet thereby to determine the degree of penetration of the pins into the carpet for engagement with the carpet backing, and means for applying combined longitudinal and downward force to the frame.
  • the adjusting means for the guard plate includes a screw threaded with respect to one of the plates and having a bottoming stop surface thereon for engaging the remaining plate.
  • the openings in the guard plate are in the form of longitudinal slots
  • the securing means includes vertical links rocking about transversely extending axes for guiding the guard plate toward and away from the pin plate while maintaining parallelism between them, and means including a spring for biasing the guard plate outwardly with respect to the pin plate.
  • guard plate is provided with parallel vertical links pivoted on transverse axes for coupling the same to the pin plate for movement inwardly and outwardly with respect to the pin plate and in which the guard plate is outwardly biased having a iirst stop for limiting outward movement and a second stop for limiting the inward movement thereby to control the degree of extension of the pins when the guard plate is pressed into contact with the carpet under working conditions.
  • a stretcher for stretching carpet having a pile and a backing
  • the combination comprising a frame having a pin plate integral therewith mounting longitudinal rows of sharpened carpet-engaging pins set at an angle to the plate, a guard plate arranged below the pin plate and having slots for accommodating the respective rows of pins, means for adjusting the relative spacing between the guard plate and the pin plate thereby to adjust the degree of extension of the pins, said guard plate having an undersurface lying substantially in a plane and having upraised 7 8 lands extending beyond said plane at the edges of the slots, References Cited said landsr occupying a minor fraction of the guard plate UNITED STATES PATENTS area so that the lands are submerged in the pile to a depth adjacent the backing when downward force is applied incident to normal use ofthe stretcher to dene a more posi- 5 2882642 4/1959 H111 2948'6 tive reference surface for gauging the degree of extension y.

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US507936A 1965-11-15 1965-11-15 Carpet stretcher Expired - Lifetime US3359032A (en)

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Application Number Priority Date Filing Date Title
US507936A US3359032A (en) 1965-11-15 1965-11-15 Carpet stretcher
BE692952D BE692952A (h) 1965-11-15 1967-01-20

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US507936A US3359032A (en) 1965-11-15 1965-11-15 Carpet stretcher

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3498661A (en) * 1968-02-02 1970-03-03 Anthony J Graziano Carpet stretching apparatus
US3572800A (en) * 1968-11-21 1971-03-30 Anthony J Graziano Pneumatic carpet kicker
US3866964A (en) * 1973-12-26 1975-02-18 Roberts Consolidated Ind Carpet stretcher with telescoping tubing locking device
US5129696A (en) * 1991-06-28 1992-07-14 Underwood Patrick S Adjustable carpet stretcher
US5516170A (en) * 1995-01-23 1996-05-14 Gary K. Wood Apparatus and method for installing carpet and vinyl floor covering
WO2005065500A1 (en) * 2004-01-06 2005-07-21 Maurice Despins Pin block for carpet gripping device
US20080202264A1 (en) * 2007-02-28 2008-08-28 Howland Shannon L Drill attachment
US10646931B2 (en) 2016-10-25 2020-05-12 Backsaver 2005, Llc Drill attachment having an adapter component

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606743A (en) * 1948-05-10 1952-08-12 Jesse C Owens Carpet stretcher
US2882642A (en) * 1957-01-25 1959-04-21 Roberts Mfg Co Carpet stretcher

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606743A (en) * 1948-05-10 1952-08-12 Jesse C Owens Carpet stretcher
US2882642A (en) * 1957-01-25 1959-04-21 Roberts Mfg Co Carpet stretcher

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3498661A (en) * 1968-02-02 1970-03-03 Anthony J Graziano Carpet stretching apparatus
US3572800A (en) * 1968-11-21 1971-03-30 Anthony J Graziano Pneumatic carpet kicker
US3866964A (en) * 1973-12-26 1975-02-18 Roberts Consolidated Ind Carpet stretcher with telescoping tubing locking device
US5129696A (en) * 1991-06-28 1992-07-14 Underwood Patrick S Adjustable carpet stretcher
US5516170A (en) * 1995-01-23 1996-05-14 Gary K. Wood Apparatus and method for installing carpet and vinyl floor covering
GB2424578B (en) * 2004-01-06 2007-03-28 Maurice Despins Pin block for carpet gripping devices
US20050161651A1 (en) * 2004-01-06 2005-07-28 Maurice Despins Pin block for carpet gripping devices
GB2424578A (en) * 2004-01-06 2006-10-04 Maurice Despins Pin block for carpet gripping device
WO2005065500A1 (en) * 2004-01-06 2005-07-21 Maurice Despins Pin block for carpet gripping device
US7237764B2 (en) * 2004-01-06 2007-07-03 Beno J. Gundlach Company Pin block for carpet gripping devices
AU2005203829B2 (en) * 2004-01-06 2010-08-12 Beno J. Gundlach Company Pin block for carpet tools
AU2005203829B8 (en) * 2004-01-06 2010-12-09 Beno J. Gundlach Company Pin block for carpet tools
US20080202264A1 (en) * 2007-02-28 2008-08-28 Howland Shannon L Drill attachment
WO2008106349A3 (en) * 2007-02-28 2008-10-30 Bruce Concrete Construction In Drill attachment
US7617885B2 (en) 2007-02-28 2009-11-17 Backsaver 2005, Llc Drill attachment
US10646931B2 (en) 2016-10-25 2020-05-12 Backsaver 2005, Llc Drill attachment having an adapter component

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BE692952A (h) 1967-07-20

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