US2650382A - Mop having a mop holding and securing bolt - Google Patents

Description

P 1953 w. A. BALLINGER 2,650,382

MOP HAVING A MOP HOLDING AND SECURING BOLT Filed March 22, 1950 INVENTOR. T401 LLA CEABALL mas/e BY 45 W M ATTORNEY,

Patented Sept. 1, I953 UNITED STATES PATENT OFFICE MOP HAVING A MOP HOLDING AND SECURING BOLT Wallace A. Balling er, Orinda, Calif. Application March 22, 1950, Serial No. 151,146

1 Claim. 1

This invention relates particularly to swabmops for applying hot bituminous fluid, tar and pitchlike substances for sealing the interstices in gravel and similar roof surfaces.

Because of the adhesive nature of such substances it is essential that the fibrous body of the mop be mechanically assembled Within a metal head, so that the strands of the mop will remain fixed in the head against dislodgement by the adhesive nature of the coating when the mop is manually moved about the surface being treated.

Among the objects of the invention is the provision of means for assembling the bight or bend in the folded strands of the yarn forming the mop body within a wire staple clinched through a washer so that compression of the folded strands results.

Another object is the mounting of a threaded bolt fixed in the washer and adapted to be threaded into a nut fixed within a ferrule having a conical head encircling and compressing the fibers of the mop head when the bolt is threaded into the nut.

A further object is the provision of a tapered ferrule as an integral part of the bell-shaped head for receiving the tapered end of the manual handle for operating the mop.

Other objects and advantages will appear as the description proceeds. In the specification and the accompanying drawings the invention is disclosed in its preferred form. But it is to be understood that it is not limited to this form; because it may be embodied in modifications within the spirit of the invention as defined in the claim following the description.

In the one sheet of the drawings:

Fig. 1 is a side elevation partially in vertical section in its lower portion, of a roofers mop constructed in accordance with this invention.

Fig, 2 is a detail in front elevation of the staple for assembling the mop strands.

Fig. 3 is a detail in plan of the washer into which the staple is clinched.

Fig. 4 is a cross section of the handle ferrule on the line IVIV Fig. 1.

Fig. 5 is a detail plan view of the spider nut for engaging the bolt of the mop head.

In detail the structure shown in Fig. 1 comprises the usual mop body I composed of multiple strands of coarse cotton string or the like. These strands are arranged in longitudinal relation to produce the desired bulk and cut to length. These lengths are then laid with their middle portion Within the U-shaped clamping rod or 2 staple having the parallel legs or lengths 2, 3 joined by the return bend 4. The-mop is then laid within a jig having a central die engaging beneath the portion 4 of the staple.

The bolt 5 is then fixed in the rectangular axial hole 6 in the circular plate "I which engages the rectangular portion of the bolt. The plate is then assembled with the ends of the staple protruding upward through the apertures 9, III in the plate. An overhead clinching die surrounding the bolt '5 is then forced downward so that countersunk portions in the face of the clinching die curl the ends of the staple laterally and downwardly at 2', 3 into the notches II, I2 in the periphery of the plate. The downward pressure of the clinching die forces the plate against the mop strands confined within the staple and compresses them against the bend 4 resting upon the central die in the jig.

The handle assembly comprises the bell-shaped lower end or cap I3 having the oppositely tapered integral ferrule I4, into which the tapered end of the handle I5 is driven and secured by the screw or nail I6, for manually manipulating the mop in the usual manner.

In the present instance the combined cap and. ferrule is composed of two identical halves With lateral flanges such as I 1, I8 spot welded together. The lateral longitudinal beads I9, 20 give additional stiffness to the structure.

The opposed halves of the ferrule have interspaced slots punched therein and providing sockets for the lugs 2|, 22, 23, 24 on the spider nut 25. The nut is inserted between the opposed halves of the ferrule, the flanges Il', I8 of which are then spotwelded which looks the nut 25 in position against turning and displacement within the ferrule. The nut has the upset threaded hub to receive the tapered end 26 of the bolt 5 which is screwed into the nut hub 2'! by turning the handle I5 to force the mop head snugly within the bell cap I3. The perimeter of free edge 28 of the bell compresses the strands of the mop and relieves the working strain against the staple and insures a rigid coaction of the mop I and the handle I5.

It is the usual practice to lay the mop lengthwise on the floor and hold it by the foot ofthe user who then turns the handle I5 with his hands until the bolt 5 is screwed tightly into the nut 25. The mop is removed in like manner. The compressive action of the perimeter 28 against the mop head seals the cap I3 against the entrance of the roofing tar which may harden and bind the nut to the bolt while cold. This facilitates the changing of mops without preheating.

The upset hub 21 has the advantage of forming a countersunk hole below for guiding the tapered bolt end 26 into the threaded nut 25.

Having fully described this invention and its mode of operation what I claim and desire to secure by Letters Patent is:

In a mop holder, a handle engageable ferrule terminatingin a lower bell-shaped end having a mop strand engageable free edge, a nut rigidly supported within the ferrule, a bolt having a threaded shank engageable within said nut, the axis of the bolt being coincident with the axis of said ferrule, the bolt being provided with a head and a rectangular portion adjacent thereto, a circular plate having a rectangular aperture centrally thereof receiving said rectangular portion of the bolt, said plate being provided with a pair of notches in its edge at diametrically opposed points, a pair of apertures in the plate intermediate said notches and said rectangular aperture, a U-shaped clamping rod having the parallel legs thereof extending through said pair of apertures and the free ends thereof being turned outwardly radially of the plate, thence axially thereof and engaged within said notches whereby to provide for rigid clamping engagement of the central portions of elongated mop strands within the opening defined by said plate and said clamping rod, and the said free edge of the bell-shaped end of the ferrule having a compressive action on the mop strands upon radially inward adjustment of the bolt for sealing the interior of the ferrule by said mop.

' WALLACE A. BALLINGER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 939,883 Wichmann et a1 Nov. 9, 1909 957,025 Zachry May 3, 1910 1,092,770 Humphries Apr. 7, 1914 1,633,830 Sturgis June 28, 1927 2,201,732 Johnson May 21, 1940 2,250,071 Speik July 22, 1941 FOREIGN PATENTS Number Country Date 213,472 Great Britain Apr, 3, 1924

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