US2846707A

US2846707A - Broom or mop frame

Info

Publication number: US2846707A
Application number: US569567A
Authority: US
Inventors: Karl I Strand; Verle E Minkler
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-03-05
Filing date: 1956-03-05
Publication date: 1958-08-12
Anticipated expiration: 1975-08-12

Description

H2, 1958 K. 1. STRAND ETAL 2,846,707

BROOM OR MOP FRAME Filed March 5, 1956 IN VEN TORS KARL STRAND VERLF E. M/N/(LEA ATTORNEY I nited Uihcc 2,846,797 Patented Aug. 12, 1958 nnooM on Mon FRAME Karl ll. Strand, Huntington Park, and Verle E. Minlrler, Downey, Calif.

Application March 5, 15*56, Serial No. 569,567

Claims. (Cl. --147) This invention relates to a frame construction for brooms or mops, the same being particularly adapted for connection to a manipulating handle.

An object of the present invention is to provide a frame of the character referred to that is readily adapted to be assembled without soldering or brazing and is, therefore, inexpensive.

Another object of the invention is to provide a broom or mop frame that has nesting interengagement with mounting means to obviate relative rocking movement between the frame and said mounting means.

A further object of the invention is to provide, in a frame and mounting means combination, finger-operable means to effect firm and facile connection and separation of said frame and mounting means.

The invention also has for its objects to provide such means that are positive in operation, convenient in use, easily installed in a working position and easily discorr nected therefrom, economical of manufacture, relatively simple, and of general superiority and serviceability.

The invention also comprises novel details of construction and novel combinations and arrangements of parts, which will more fully appear in the course of the following description. However, the drawing merely shows and the following description merely describes, one embodiment of the present invention, which is given by way of illustration or example only.

In the the drawing, like reference characters designate similar parts in the several views.

Fig. 1 is a front elevational view, the handle being broken away, of a broom or mop construction embodying the frame of the present invention.

Fig. 2 is a top plan view of said frame together with the mounting means thereof.

Figs. 3 and 4 are enlarged cross-sectional views as taken on the respective lines 33 and 44 of Fig. 2.

Fig. 1 shows a handle 5 and an articulated connection 6, the same being disclosed in greater detail in pending application Serial No. 400,447 on which Patent No. 2,763,517 issued September 18, 1956. It will be understood that said connection 6 terminates in a bifurcation 7. The present improvements comprise, generally, a mounting plate 8 connected to said bifurcation 7 of the connection 6, a broom or mop frame 9, and means 10a connecting the plate 8 and the frame It will be understood that the connection 6 may vary and the same, per se, forms no part of the present invention. Also, the frame 9 hereinafter will be called a mop frame, and it will be understood that the same may carry floor or other sweeping, cleaning or polishing means.

The plate 8 that is illustrated is of generally flat rectangular form and is integrally provided with a centrally disposed, upwardly extending, ear 10 which has connection with the mentioned bifurcation 7 as by a bolt 11. Apertures 12 are provided in the opposite ends of said plate in suitable spaced relation to the ear Ill. The under face of plate 8 is preferably provided with longitudinal ribs 13, the same being provided, at least, along the lower longitudinal corner edges of plate 8. It will be clear that plate 8 has angular adjustment relative to handle 5 because of the articulated construction of the connection 6 and by reason of the adjustment afforded around the axis of bolt 11.

The mop frame 9 is shown as comprising a length of wire 14 that is formed to have a flattened and elongated O-shape such as suggested in Fig. 2, and a connector plate 15. The ends of the wire 14 are shown at 16 and said wire is so bent as to have half-round ends 17 c0nnected by straight sides 18, the mentioned Wire ends 16 being located in one of the sides 18 in slightly spaced relation substantially midway between the rounded ends 17.

The connector plate 15 is preferably made of sheet stock and the same is formed to have opposite rounded or rolled edges 1Q that encompass the middle portions of the wire sides 13. In practice, said rolled edges 19 are clinched over the wire substantially as shown. However, to insure against longitudinal displacement of plate 15 relative to the wire sides 18, a dent or dimple 29 is formed in the rolled edge to protrude between the wire ends 16, substantially in the manner shown.

It will be noted that the mounting plate 8 is substantially narrower than is the connector plate 15 and that the two plates have a centered operative position (as best shown in Figs. 2, 3 and 4) along the longitudinal middle of mop frame 9. By providing connector plate 15 with a transverse concave curvature, as shown in Figs. 3 and 4, the narrower mounting plate 8 has little tendency to shift either rotationally or transversely relative to the wider connector plate 15. It will be clear that longitudinal alignment of the two plates may be maintained even upon loosening of the connecting means Illa.

Said connecting means is shown as a pair of headed studs 21 aflixed to the mentioned spaced end portions of connector plate 15, the threaded ends 22 of said studs extending upwardly from the concavity of plate 15. The apertures 12 of mounting plate ti receive said stud ends 22, and mar-proof nuts 23 are engaged over said stud ends and, when tightened, secure the plates together. Since said nuts 23 may be manipulated with the fingers and the rubber 24 thereof compresses against the plate 8, the resultant friction holds the nuts against accidental backing otf without spring washers or other such means.

It will be understood that some reactive flexure of the concave plate 15 may result from a tightened condition of the connection means 10a. This will serve to increase the friction between said nuts 23 and plate 8 and, thereby, obviate or, at least largely reduce, loosening of said nuts. It will also be clear that the construction embodies means that insures relative non-movement between plate 8 and wire 14, the same comprising the concave interengagement to prevent rocking and the dimple Ell to prevent endwise movement.

While the foregoing has illustrated and described what is now contemplated to be the best mode of carrying out our invention, the construction is, of course, subject to modification without departing from the spirit and scope of the invention. It is, therefore, not desired to restrict our invention to the particular form of construction illustrated and described, but to cover all modifications that may fall within the scope of the appended claims.

Having thus described our invention, what We claim and desire to secure by Letters Patent is:

1. In combination, a rectangular mounting plate having an under surface with longitudinal ribs including ribs adjacent longitudinal edges; a mop frame comprising a length of wire formed to have a flattened O-shape with one side thereof having the ends of said wire in endspaced relation and located midway between the opposite ;ends of the O-shaped wire, a transversely concave connector plate substantially the same length as the mounting plate and spanning between the wire sides, the ribs adjacent the longitudinal edges of the mounting plate im pinging on corresponding longitudinal portions of the conbeing, thereby, disposed longitudinally of and within the concavity of the connector plate; and means to secure the plates together.

2. In combination, a rectangular mounting plate having an under surface with longitudinal ribs including ribs adjacent longitudinal edges; a mop frame comprising a length of wire formed to have a flattened O-shape with one side thereof having the ends of said wire in endspaced relation and located midway between the opposite ends of the O-shaped wire, a transversely concave connector plate substantially the same length as the mounting plate and spanning between the wire sides, the ribs adjacent the longitudinal edges of the mounting plate impinging on corresponding longitudinal portions of the connector plate on each side of a medial line of the latter plate and means to locate said connector plate in fixed relationship to the said wire ends; said mounting plate being, thereby, disposed longitudinally of and within the concavity of the connector plate and having apertures therein adiacent each end thereof; said connector plate being provided with studs extending through said apertures; and resilient nuts on said studs and frictionally engaged with the mounting plate on the surface opposite to the ribs thereof.

3. In combination, a wire mop frame formed in a flattened O-shaped form, a rectangular and relatively thin flexible connecting plate located midway of the ends of said frame and spanning therebetween and secured thereto, said plate being transversely concave and, thereby,

having its longitudinal medial portion depressed below the topmost part of the frame, said depressed medial portion having two apertures adjacent the ends of the plate, a generally flat thicker and inflexible mounting plate substantially conextensive in length with the connecting plate and being provided on the surface thereof directed toward the concavity of the connecting plate with longitudinal edges in impingement with longitudinal portions of the latter plate, said mounting plate having stud apertures and frictionally engaged, resiliently-surfaced stud and nut means extending through said apertures to connect said plates and, thereby, to exert tension on the thinner plate to flex the concavity thereof toward the thicker plate.

4. The combination according to claim 3 in which the thicker plate is provided with longitudinal edge ribs that serve to engage the thinner plate to hold the medial concave portion thereof spaced from the thicker plate and to allow flexure space for said thinner plate.

5. The combination according to claim 3 in which the stud and nut means include compressible nuts that cooperate against the inflexible plate to react to the flexure of the thinner plate to insure tight retention of the studs in their tightened condition.

References Cited in the file of this patent UNITED STATES PATENTS 1,761,180 Cave et a1. June 3, 1930 1,786,037 Sturgis Dec. 23, 1930 1,798,418 Hertzberg Mar. 31, 1931 1,989,825 Schaefer Feb. 5, 1935 2,152,358 Palmeri Mar. 28, 1939 2,370,838 Brennan Mar. 6, 1945 2,509,687 Lee May 30, 1951 2,561,025 Le Febvre July 17, 1951 2,638,616 Fatland May 19, 1953