US1021008A - Bolting-cloth cleaner. - Google Patents

Description

S. SNYDER.

BOLTING CLOTH CLEANER.

APPLIOATION FILED MAR. 21, 1911.

1,021 ,008. Patented Mar.26, 1912.

WITNESSES M C A @Z'Mu v W I W fi Attorney s. SNYDER. I BOLTING CLOTH CLEANER.

APPLICATION EILE D MAR. 21,1911.

1,021- ,OO8 Patented Mar. 26, 1912.

2 SHEETS-SHEET 2.

WITNESSES INVENTOR UNTE STATES ATENT OFFICE.

SIMON SNYDER, OF MUNC'Y, EENNSYLVANIA, ASSIGNOR TO SPROUT, WALDBON & COMPANY, OF MUNCY, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

BOLTING-CLO'I'H CLEANER.

Specification of Letters Patent.

Application filed March 21, 1911.

Patented Mar. 26, 1912.

Serial No. 616,038.

To all whom it may concern Be it known that I, SIMON SNYDER, a citizen of the United States, residing at lVIuncy, in the county of Lycoming and State of Pennsylvania, have invented certain new and useful Improvements in Bolting-Clot-h Cleaners, of which the following isa specification.

This invention relates to means for cleaning the cloth or bolting silk of flour-bolting machines, and one object of the invention is to provide a device which will be simple in construction and arrangement of its parts, and efficient in operation and which will automatically reverse its movement at each end of its stroke, without any attention on the part of the operator.

A further object of the invention is to provide a construction which will be strong and durable and will offer no obstruction to the flow of the flour through the sieve.

The invention also seeks to provide means whereby a positive stop for the brushes will be provided, and the brushes will be held against the cloth with sutlicient pressure to thoroughly clean the same, but will be permitted to yield to the weight upon the cloth, so that the injuring of the cloth by the brushes Will be prevented.

All these objects, and such other incidental objects as will hereinafter appear, are attained in such a device as is illustrated in the drawings, and the invention resides in certain novel features which will be here inafter fully described and then distinctly stated in the claims.

In the accompanying drawings, Figure 1 is a longitudinal section of a sieve showing my improvements applied thereto. F ig. 2 is an enlarged plan view of a portion of the sieve. Fig. 3 is a transverse section on the line 3-3 of Fig. 1. Fig. 4: is a perspective View of the brush holder and the guide, and stop brackets at the ends of the same. Fig. 5 is a detail sectional view of one end of the brush showing the stop thereon in engagement with the transverse stop bar of the sieve frame. Fig. 6 is a detail sectional elevation, looking at the side of the brush opposite that seen in Fig. 8 and taken on line 66 of Fig. 2. Fig. 7 is a detail perspective view of the pawl and its support.

The sieve frame 1 is preferably of an oblong rectangular form and may be operated in any of the ordinary well-known methods,

although a gyratory motion is usually imparted thereto. On the inner faces of its side bars, the sieve is provided with longitudinal rails 2 on which the brushes are slidably mounted. At the center of the sieve frame, I mount a transverse metallic bracing or connecting rod 3 which serves as a stop to limit the movement of the brushes, and also as a support for the pawl 4 by which an impelliug movement is transmitted to the brushes. Two brushes 5 are employed, and these brushes are connected by straps or bars extending longitudinally of the sieve, so that they will move simultaneously and equally in either direction. The brushes consist of heads 6 and bristles 7 rising therefrom, the heads being mounted in holders 8 consisting of transverse metal straps or plates having stirrups 9 at their ends to receive the brushheads 6, and springs 10, secured to the under side of the brushhead, bear against the lower portions of bases of the stirrups so as to yieldingly hold the brushes to the bolting cloth and thereby establish a firm pressure against the cloth, while at the same time permitting the brushes to yield to any irregular distribution of the load upon the cloth, so that tearing of the cloth will be prevented, although the brushes will be held in constant contact therewith to keep the meshes of the same open and clean. Guides or hangers 11 are also provided at the ends of the bars or straps S, and these guides are in the form of angular brackets which engage over the rails 2 and against the sides of the same, so as to support the brushes on the rails and permit them to slide therealon Adjacent these guides or hangers, stop fingers 12 project upwardly from the straps or bars 8 and these fingers are adapted to impinge against the transverse rod 3 and thereby limit movement of the brushes in either direction.

Parallel straps or connecting bars 13 extend between the straps or holders 8 and have their ends bent outwardly at right angles to form lugs or ears 14, which are rigidly secured to the said straps or holders 8 as clearly shown. Between these straps or bars 13 and parallel therewith is a central rack bar 15, the ends of which are spaced from the holders 8, as shown most clearly in Fig. 2, and the teeth 16 of which on the upper edge thereof are so shaped that their edges extend at an angle of for instance 45 whereby they will be positively engaged by the actuating pawl on either side, so as to be effectually operated in either direction, the lower free end of the pawl being rectangular to facilitate such engagement. It will be observed that by the described construction a rigid connection is provided between the brushes, at an angle thereto, preferably at right angles, with very little obstruction of the intervening space, and that the rack-bar is supported by said connection so as to leave at each end an unobstructed space between it and the adjacent brush into which the free end of the dog may drop, for reversing the direction of movement of the brushes, and that one of the edges of the teeth of the rack-bar is upwardly inclined away from one brush and the other edge upwardly inclined toward the same brush, and away from the other brush, so that the angular end of the dog may squarely engage or abut against that edge of the tooth that is inclined toward the brush that is being moved away from the dog, thus insuring a positive engagement and a firm hold of the dog in effecting the desired movement of the brushes in both directions. The rack bar is secured to the straps or bars 13 by bolts 17 around which spacing ferrules or collars 18 are fitted between the rack bar and the connecting straps or bars, so that the parallel relation of the parts will be preserved and the spao ing of the same will be maintained. The actuating pawl is mounted to swing freely on the bar 3 and consists of a block 20 hav ing a squared lower end and provided at its upper end with a cylindrical enlarged head 21 having a semi-circular slot 22 through which the stop pin 23 is inserted into the bar 8 so as to limit the movement of the pawl in either direction and prevent premature reversal.

By referring to Fig. 1, it will be readily seen that the pawl, by its en 'agement with the rack bar in the illustratec arrangement, will prevent movement of the brushes except to the right. hen the sieve moves to the right it will carry the brushes in the same direction, but when the sieve moves in the opposite direction the brushes will continue to move slightly by reason of their inertia, the rack bar sliding under the pawl. The brushes will thus have a movement rela tive to the sieve, which will gradually carry them to the end of the sieve, whereupon the pawl will drop into the space between the end of the rack 'bar and the adjacent brush, so that the reverse movement of the sieve will then carry the end of the rack bar under the pawl and cause the pawl to ride over the said end of the rack bar and assume an inclination, the reverse of that previously assumed by it. The brushes will, consequently, then be caused to travel relative to the sieve in a direction opposite to that previously traveled by them, so that the entire surface of the bolting cloth will be treated and the meshes of the same effectually cleaned. It will also be noted that the fingers 12 will impinge against the transverse rod 8 when the brushes reach the end of their travel, so that the movement of the brushes will be positively arrested and injury to the pawl through forcible contact of the brush head therewith will be pre vented.

It will be readily understood from the drawings and the foregoing description that my improved device otters practically no obstruction to the downward flow of the flour, so that the choking of the parts cannot occur. The construction is such, also, that all. the parts may be made of metal and consequently the maximum strength with the minimum weight attained.

The peculiar form of the guide hangers will hold the brushes to the rails, so that they cannot slip out of engagement therewith, while at the same time they may slide freely along the same, and the disengage ment of the brush heads from the holders under the influence of the springs, during' the operation of the device is prevented by lips or stops 24- projecting from the straps 8 over the brushheads 6, as clearly shown in Figs. 2, at and 5.

fly device derives its impulse from the movement or throw of the bolting sieve in either direction, and will move so easily that no additional power will be required to operate any of the parts. The pin 23 secured in the central transverse rod 3, by contacting with the ends of the slot 22 in the head of the pawl, will limit the upward throw of the pawl, so that it cannot assume an inoperative position, it being understood that the length of the slot will not exceed one half the circumference of the head of the pawl. The spacing ferrules or collars between the rack bar and the connecting bars will hold the said connecting bars out of contact with the rack bar, and thereby afford ample space for the play of the pawl, while at the same time this space will accommodate the downward flow of the flour and prevent accumulation of the same on the working parts so as to impede the action.

By referring to Fig. 2, it will be noted that the rack bar and the straps 13, which support it, present their edges to the flow of the flour and that wide spaces are provided between the rack bar and the connecting bars while the spaces between the brushes and the ends of the sieve are unobstructed and consequently there are 110 wide or close surfaces upon which the flour may lodge.

The bolting machine having been set in motion, the brushes will be caused to automatically travel back and forth continuously in contact with the cloth as long as the sieve is operated so that the meshes of the cloth will be kept open and the flow of flour to cause reciprocation of the brushes.

2. The combination with slidably mount-- ed brush holders having stirrups at their ends, of brush heads fitted in said stirrups, springs bearing against the brush heads and the bases of the stirrups, means for limiting the movement of the brushes under the influence of said springs, connections between the brush holders, and means whereby the brush holders will be reciprocated.

8. The combination of slidably mounted brush holders having stirrups at their ends, brushes having their ends engaging said stirrups, means for yieldingly supporting the brushes in said stirrups, stops on the brush holders overhanging the brushes, and means for imparting motion to the brush holders.

4. The combination with a sieve having longitudinal rails on its inner sides, of brush holders fitted between the said rails, hangers at the ends of the brush holders projecting angularly from one side thereof, and constructed to ride upon the tops of the rails and bear against the sides of the same, brushes carried by the holders, connections between the holders, and means whereby the movement of the sieve will actuate the brush holders.

5. The combination with a sieve, of a brushing member slidably mounted therein, a rack bar on said brushing member, a transverse rod secured in the sieve, a reversible pawl hung on said rod and engaging the rack bar, said pawl having a slot in its head disposed transverse to said rod, and a stop on the rod engaging said slot.

(3. The combination with a sieve, of rails secured longitudinally to the side walls of the sieve, a brush holder extending between the rails, laterally projecting hangers carried by the ends 01 the said holder and having top members extending over and resting upon the rails and side members bearing against the inner sides of the rails, a brush mounted in the said brush holder and bearing against the top oi the sieve and stops on the holder overhanging the brush.

7. The combination with a sieve, of brush holders extending between the sides of the sieve and slidably engaging the same, brushes mounted in the said holders and bearing against the top of the sieve, parallel straps extending between the brush holders and having their ends secured to the same, a rack bar disposed between the said straps and parallel therewith and terminating short of the brush holders, means for securing the said rack bar to the said straps and maintaining it in spaced relation therewith, and a pawl pivotally mounted in the sieve above the said 'ack bar and riding upon the same.

In testimony whereof I aflix my signature, in presence of two witnesses.

SIMON SNYDER. Witnesses JAS. T. sinvnn'roorn,

J. 0. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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