US403757A - Flour-bolt - Google Patents

Description

(No Model.)

2 Sheets-Sheet l.

J. JOHNSTON.

FLQUR BOLT.

Patented May 21 1889. it@ a@ I ATTORNEYS.

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WITNESSBS 2 WZ/ (No Model.) 2 Sheets-Sheet 2.

J. JOHNSTON.

l FLOUR BOLT. No. 403,757. Patented May 21 1889..

WITNESSBS v v INVENTOR;

ATTORNEYS.

N PEIERS. mummy-wlw, Wampas D. C.

UNITED STATES PATENT OFFICE.

JOI-ITN JOHNSTON, OF NEENAH, WIQSCONSIN.

FLOU R-BOLT.

SPECIFICATION forming part of Letters Patent No. 403,757, dated May 21, 1889.

Application filed .l'uly 20, 1887. Serial No. 244.831. (No model.) v

To @ZZ whom t may concern.-

Be it known that I, JOIN JOHNSTON, of Neenah, in the county of Winnebago and State of Wisconsin, have invented a new and Improved Flour-Bolt, of which the following is a full, clear, and exact description.

This invention relates to Hour-bolts; and it consists in the novel features hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forminga part of this specification, in which similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a side View of my improved fiour-bolt. parts being shown in section. Fig. 2 is an end view of the same. Fig. 3 is an enlarged detail view illustrating thev construction of the adjustable feeding device. Fig. 4.is an enlarged detail view, in partial section, illustrating the construction of the upper portion of the bolt-hanging attachments; and Fig. 4 is a similar view of the lower portion of the same, but in a position at right angles to Fig. 4. Fig. 5 is a perspective View of the construction illustrated in Figs. 4 and 4. Fig. 6 is a sectional detail view illustrating the construction of the bo1t' ing-frame, one of the clearing-balls used in connection with said frame being represented in connection therewith; and Fig. 7 is a detail view of one of the crank-disks.

In the drawings, 10 represents the main frame of the machine,to the upper portion of which frame there are secured four bracket-s,

11', formed with longitudinal slots 2, adapted to receive bolts 12, which bolts engage with hanger-arms 13, said arms extending inward at rightangles to the longitudinal strips of the 'frame 10 to be carried downward in perpendicular lines, the perpendicular sections of the arms being slotted, as shown at 3, to provide for the adjustable connection of the hanger-brackets proper, which are shown at 14, said hanger-brackets being secured to the perpendicular sections of the arms 13 by bolts 15, and in order that there may be a direct support for the hanger-brackets, Iprovide setsorews 16, which engage with apertures that are formed in lugs or ears 17, that extend inward from the perpendicular sections of the arms 13.

The hanger-brackets 14 are slotted at 4 to provide for the adjustment toward or from the main frame of the hangers 18, which said hangers are provided with upper universal joints, 19, and lower universal joints, 20, the lower sections of the joints 2O being connected to brackets 2l, that are secured to the sides of the sieve-frame 22. This sieve-frame 22 is provided with three slats, 23, that are apertured to provide for the passage of screws 24, which engage with blocks 25, that are secured to the bolting-cloth 2G, the cloth being normally upheld by springs 27, Athat are coiled about the screws 24 and abut against the slats 23 and the blocks 25, this arrangement permitting a certaindepression or lowering of the cloth, but preventing any upward movement beyond the normal line.

To each end of the sieve-frame 22, I secure arms 30, the ends of which are provided with sockets 3l, that are adapted to receive crankpins 32, said pins being mounted in slides 5, that are formed in the crank-disks 33, Said crank-disks 33 are carried by vertical shafts 34 and 35, which shafts are stepped in bearings 36 and guided by upper-bearings, 37. The shafts 34 and 35 carry bevel-pinions 38, that engage with bevel-gears 39 carried by a shaft, 40.

Across the end of the machine the main driving-shaft 41 is mounted, and this shaft carries a spur-gear, 42, which en gages a smaller spur-gear, 43, that is carried by an upper shaft, 44, which said upper shaft in turn carries a bevel-pinion, 45, that engages the bevelgear 39, so that as the shaft 4l is revolved motion will be transmitted therefrom to the shaft 40, 'and from said shaft. to the shafts 34 and 35, thus imparting a similar motion to said shafts 34 and 35. The shaft 4l also carries a bevel-gear, 46, which engages a similar gear, 47, that is carriedby an upper conveyer-shaft, 48, this shaft 48 carrying a gear, 50, which engages a gear, 51, that is carried by a lower conveyer-shaft. l

Above the sieve-frame I mount a feeder, 60, which is fed from a. hopper, 61, and beneath this feeder I adjustably mount a swinging plate, 62, said plate being provided with lugs 63, which holdupwardly-extending rods 64, that pass through apertured lugs 65, formed upon arms 66, that are rigidly connected to a rook-shaft, 67. Between the lugs 65, I arrange IOO springs (i8, one end of these springs abutting against the lower lugs, while the upper ends abut against adjusting-nuts 60, the arrangement being su ch that by turning down the nuts 5 the tension of the springs will be increased and the plate G2 will be held closer to the bottom of the feeder-box.

To the end of the shaft G7, I connect a crankarm, 71, and this crank-arm in turn is con 1o nected by a rod, 73, with a crank-ar1n,7 2, that is carried by the shaft 41, the crank-arm 72, however, being much shorter than the arm 71, so that as the shaft 41 is revolved a partial rotary motion will be imparted to the shaft G7. In Order that the sieve may be cleared, I place upon it a number of polygonal balls, 80, the number of these balls varying with the character of the material that is being operated upon. zo By mounting the sieve as above described I'provide for the movement of the sieve inany direction desired, and thus render it possible for the sieve to be carried to and fro in an elliptical path when the shafts 34 and 35 are revolved; and by making the hanger connections as above described I provide for a proper adjustment of the sieveframe, and .byl adjustably connecting the crank-pins to their disks I am able to vary the path through which the sieve is carried to meet the requirements of the particular material that is being operated upon.

In a companion application, Serial No.

255,404, I show and describe a shaking-bolt having some of the general features of this.

In said application I have claim ed the swinging hopper apron or plate more broadly than in this, and also claimed specifically the dilferent means v therein shown and described for suspending and adjusting said apron or plate. I have likewise described and claimed means for imparting a circular or elliptical movement to the sieve.

Having thus fully described my invention,

I claim as new and desire to secure by Letters Patent- A 1. The combination of the frame l0, the i slotted brackets 11, the bolts 12, the angular arms 13, having their horizontal arms snpported by said bolts, and having their verti- 5o cal arms slotted and provided with lugs 17, having vertical set-screws 16, the angular brackets 14, adjustable On the slotted arms above the set-screws, on which they rest, and the sieve having brackets 21 on its sides, with 55 the hangers 18, provided with universal joints connecting them to the brackets 14 and 21, respectively, substantially as set forth,

2. The combination, in a flour-bolt with the feeder, Of depending swinging arms at oppo- 6o site sides thereof, a plate at the lower ends of. said arms, vertically-movable connections between said plate and arms, springs allowing a yielding movement between the arms and connections, and means for oscillating said plate, substantially as set forth.

3. The combination, with the feeder, of the dependn g slotted swinging arms at Opposite sides thereof, provided with outwardeproject ingside lugs, a plate extending under the dis- 7o charge-end of the feeder, provided with rods extending upwardly through the said lugs and sliding freely therein, and lugs 63, engaging the slotted arms, and the springs supporting the rods yieldingly, substantially as set forth.

4. In a flour-bolt, the combination, with the sieve and its frame, of the apertured slats extending across the .under side of said frame, blocks on the under side of the sieve, screws or pins extending from saidl blocks down through the Slat-apertures, and springs on said screws or pins, substantially as set forth.

5. In a Hour-bolt, the combination, with the sieve having blocks on its under face, and the frame to which the sieve is secured having apertured slats on its lower side, of the headed screws passing up through the apertures in the slats into the said blocks, the heads of the screws resting aga-inst the lower surfaces of said slats and limiting the upward movement 9o of the screws and sieve, and the springs on v.the screws between the blocks and slats, substantially as set forth.

JOHN JOHNSTON.'

Witnesses:

OLE. Q. MY-HRE, EvEN JOHNSON.

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