|Publication number||US1142698 A|
|Publication date||Jun 8, 1915|
|Filing date||Apr 9, 1914|
|Priority date||Apr 9, 1914|
|Publication number||US 1142698 A, US 1142698A, US-A-1142698, US1142698 A, US1142698A|
|Inventors||Edwin W Grove, George P Crumbaugh|
|Original Assignee||Edwin W Grove, George P Crumbaugh|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (83), Classifications (9) |
|External Links: USPTO, USPTO Assignment, Espacenet|
US 1142698 A
E. W. GROVE & (S.v P. CRUMBAUGH.
APPLICATION HLED APR.9. 1914.
1,142,698, Patented June 8, 1915.
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UNITED STATES PATENT OFFICE.
EDWIN W. GROVE AND GEORGE P. CRUMBAUGH, 0F ST. LOUIS, MISSURI.
Specieation of Letters Patent.
Patented June 8, 1915.
To IZ/ 107mm it may concern:
Be it'known that we, EDWIN W. Gnovn and Grenen P. C nUMnAUGH, citizens of the United States, residingr at St. Louis city, State of Missouri, have invented new and useful Improvements in Combination-Brushes, of which the following is a specification.
The present invention has reference to combination brushes, and it proposes, brlefly, an improved device of the class or character stated, in which the active or working elements consist both of the usual yielding bristles and, in addition, of teeth of relatively hard material, so that 1n the use of the device a combined brushing and scraping action is produced which renders 1t particularly well adapted for treatment of the scalp, for cleaning dental plates and, 1n general, for all cases of a like character where the substance to be removed must first be loosened before it can be carried away by the bristles.
An embodiment of the invention is illustrated in the accompanying drawing, wherein Figure 1 is a part sectional side elevation of the improved brush; Fig. 2 is a View, partly in elevation and partly in section, showing the mounting of the bristle tufts and teeth; and Fig. 3 is a similar view of a modification.
In said drawing, 2 indicates generally thel bristle tufts, and 8 the teeth. The said tufts and teeth are secured to a back which may have any desired size and shape, and may be constructed of any preferredv material, and the bristle tufts and teeth which constitute the active elements of the brush and which are secured as hereinafter described, are positioned, alternately and at equidistant intervals, in parallel rows, located at any desired distance apart from one another and containing any suitable number of such elements. As a result of this arrangement, each bristle tuft, with the obvious exception of those at the ends of the rows, will be disposed between two teeth in both the longitudinal and the transverse row wherein it is located, and, conversely, each tooth will be similarly disposed between two bristle tufts.
The teeth themselves may be made of any suitable hard or relatively-hard material, as, for example, vulcanized rubber or fiber, Celluloid, horn, shell, wood, or even metal, and they are yieldably attached to the brush back. y The said brush back consists of a body part 1 and a face plate 8 secured adj astems or inner ends of thetufts of bristlesl fit in transverse openings 7 in the brush back, and are secured therein in any desired manner, the opening 7 being formed in the face plate 8.
The teeth are formed at their inner ends with enlargements or heads 4, which are embedded in soft-rubber cup-like bases 9, the latter being inserted through openings 12 in the face plate of said back and projecting at their outer ends 10 beneath or beyond the same. The inner ends 11 of these bases are ianged or headed and are seated in enlargements 13 of the openings 12. The headed ends of the teeth do not project sulficiently far 'into the bases to lie within the brush back, as will be understood from Figs. 1 and/and in consequence of this arrangement, the teeth are enabled to yield or flex with the base ends 10, like the bristles, when passing over an irregular surface. The same mounting, with. a slight change, is utilized in the construction shown in Fig. 3, but in this instance, both the bristles and the softrubber bases are strung upon wires 14, the latter extending across a seat or cavity 15 provided in the under face of the body part 1a of the brush back which is completed by a face plate 8a provided with openings for the said bristlesand soft rubber bases. The ends of the wires are anchored or otherwise secured in the end walls of the cavity 15.
It is to be observed that the points or lower ends of the teeth terminate coincidently with the free ends of the bristles, this arrangement offering the advantage that the contact of the bristle ends with the surface under treatment is assured, Iso that the said bristles are thus enabled to catch and remove adapted to move with said cup end during the flexion of the latter.
2. A brush having a back of rigid material which is formed with rows of transverse openings; a flexible rubber cup seated in each opening and projecting beyond the @3 maaee same at its outer end; and "a rigid .tooth iin testimony whereof We have hereunto i5 having a headed inner end embedded 1n the set our hands in presence of two subscribing projecting end of each cup and adapted to Wltnesses.
move with said oupend during the ieion EDWN W. GRVE. 5 of theAlaztexh h b k f GEORGE PVCEUMBAUGH 3. rus aving a ac o rigid material which is formed with rows of trans- Gv-ltlesses to Slgnatum of Edwm W verse openings, the alternate openings in r Ve N. HANNINGa each row having iezgibie rubber cups seated f 10 therein; a rigid tooth embedded at its inner GEO' A" RANDOLPH' end in the outer end of each' cup and adapted Witnesses to signature of George P. Crumto move with said cup end during its flexion; baugh:
and bristlev tufts secured in the remaining EDWIN W. GROVE, Jr.,
openings in said rows. Gno. A, RANDOLPH.
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