US836341A - Coffee-roaster. - Google Patents

Description

No. 836,341. PATENTED NOV. 20, 1906. N. B. POST. COFFEE ROASTER.

APPLIOATION FILED JULY 12, 1906.

3 SHEETS-SHEET 1.

2Vai/m171y i g: W Mam way M ATTORNEY.

PATENTED NOV. 20, 1906.

N. B. POST. COFFEE ROASTER.

APPLICATION FILED JULY 12, 1906.

. a SHEETS-SHBBT 2.

[N VEN 7' 0R.

ATTORNEY.

No. 836,341. PATENTED NOV. 20, 1906. N. B. POST.

COFFEE ROASTBR.

APPLICATION FILED JULY 12. 1906.

3 SHEETS-SHEET 3.

[N VEN T 01?.

NATHANIEL s.

Post, or sr. Louis, r'ssouar.

No. ss'asei.

Specification of Letters Patent.

Patented Nov. 20, 190@.

Application filed J 111y 12, 1906. Serial No. 825,921.

To all whom it may concern:

Be it known that l, NATHANIEL B. Peer, a citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful improvements in Coffee- Roasters, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has-relation to improvements in coffee-masters,- and it consists in the novel details of construction more fully set forth in the specification and pointed out in the claims. A

In the drawings, Figure 1 is a side elevation of my improved roaster. Fig. 2 is a rear end elevation thereof. Fig. 3 is a front end elevation, parts being broken away. Fig. 4 is a vertical sectional detail of the clutch mechanism, taken on the line 4 l of Fig. 5.. Fig. 5 is a horizontal CIOSS'rSGClllOH on line 5 5 of Fig. 4. Fig. 6 is a vertical section on line 6 6 of Fig. 5. Fig. 7 is a vertical cross-sea tion on the broken line 7 7 of Fig. 1. Fig. 8 is a vertical cross-section on line 8 8 of ig. i. Fig. 9 is a longitudinal vertical section on the broken line 9 9| of Fig. '7. Fig. 16 is a cross vertical section on the line 110 ill of 9. Fig. 11 is a vertical sectional detail on line 11 1 1 of Fig. 7 Fig. 12 is a side elevation of a roaster in which a preliminary roasting cyl inder is superposed over the regular series of roasting-cylinders, the walls of v casing being partly broken away; Fig. 13 is a vertical cross-section on line 13 13 of Fig. 12, and

Fig. 14 is an end elevation of the rear of Fig.

The object of my invention is to construct a roaster which will entirely eliminate the danger of burning the coffee, one which will afford ample time to the berry to swell during the roasting operation, one which'will conserve to the best advantage the aroma and flavor of the lcoffee, one which will insure a uniform product, one requirin a minimum amount of fuel, one which wil completely eliminate the chaff and foreign material from the berry, one which subjects the berry to an incipient drying preparatory to its final roasting and at the same time subjecting it to such drying 'eration while in the path of the products 0 distillation evolved from herries undergoing final roasting, one which will effect the roasting in a minimum amount of time, one which is under perfect control of the operator, and one possessing further'and ders a a h b revolve.

other advantages better apparent from a de- A into which the coffee-berrms are deposited and from which they are subsequently fed to the roasting-cylinders, as presently to be described. Mounted on the casing, at the opposite end thereof, is anelectric motor M, (or any. equivalent motor,) whoseshaft ter nates in a belt-pulleyS, from which leads a belt l along the rear side of the casing, said belt passing over a belt-pulley on the shaft of a fan located in the casing 6, an induction! pipe 7, leading from the axis of the fan to the bottom of the casing 1, Figs. 2, 3, and an reduction-pipe 8, leading fi'om th of the fan upward beyond the casing i, said eduction-pipe conducting away the chaff and light particles. The current passing through the pipe 8 induces a currentin the shunt or elbow 9,-coupled to the pipe 8 and. opening into the casing 1 through the top thereof. Mounted longitudinally at 'a convenient height above the floor and adjacent to the casing is a shaft 10, whose rear endcarries a e periphery" belt-pulley ill, from which leads abut-i2 to the pulley 3, this connection'servmg to impart rotation to the shaft 10. The shaft terminates in a belt-pulley passes a belt 14 overs and ofa central shaft 1a, which forms the axisabout which the series of roasting-cylin- The gearing described pulley 15 at the rear constitutes the driving reducing gear, with which'the pulley 15 may be thrown into engagement or from which it may be disengaged by a special clutch arrangement, the details of which are shown in Figs. 4c, 5, and 6 and which is as follows: Pivoted to a bracket 17, projecting from the rear Wall of the casing, is. a clutchdever 18. whose forked. end enga es an annular rcove 19,:formed in the hub o the pulley 15, which is mounted loosely on the shaft 16, being in addition movable longitudinally thereon,) said hub constituting the male section of a clutch which cooperates with the female section of the hub portion of a pinion 20, likewise loosely mounted on the shaft 16.

The pinion meshes with the large section of a Stepgear 21, mounted on a spindle 22, secured to the wall of the casing l, the re portion for a speed -13, from which IDS connecting the hopper duced or smaller section 21 of said step-gear meshing in turn with a gear 23, keyed to the shaft 16. Thus it will be seen that by causing an engagement between the pulley and pinion reduced rotation may be'imparted to the shaft ldi'rom the shaft 10, which in turn has rotation imparted to it from the motor M through the belt 12 and pulley 11. Disposed about the shaft to (which may be denominated asthe cylindershait) are a series of pairs of roasting cylinders or receptacles a a l) h, (two pairs being shown herein) which are coupled to said shaft by means of the radiating arms of the spiders 2t, secured'to the shaft. Eachcylinder is composed of closed terminal heads and a peripheral body of 'WllB fabric, as shown, and of a mesh sufficiently close to confine the berries. Ji ithin each cylinder is a spiral conveyor 25, Whose axis or shaft 26 is stationary relatively to the Walls of the cylinder. Located at one end of each pair of roasting eylinde s is a receiving mouth or intake 27, which receives the codes from the impper 2,, as presently tobe described, the codes in t e cylinder c passing out oisaid cylinder at the opposite end throu h the duct 28, connecting the cylinders, Fig. 10, whence it passes into cylinder (thesame heing true with respect to h and 5 thence along cylinder e around the spiral eon veyer doerein and out oi the delivery-spout 29 at the end adjacent to the intake 2:7 of the contiguous cylinder c of the pair. The cofilee as discharged, h'om the cylinders passes down the inclined wall. 36 whence it is delivered onto a' belt conveyor at the (his end oil the belt 31 is located immediately over the dischargespou-t 32 of the casing, through which spout the roasted coffee is disehargedfthe chail-and light particles losing drawn into the pipe '2 tan 6 and discharged through the pipe 8; The helt 31 is mounted 'hetween suitable rollers or pulleys 33, the shalt 34 oione of the pulleys terminating in a hot-Wheel 35,'to,

which rotation is imparted from the cylindershaft 16 through the medium oi the sprocketchain 36, passing over a sprocket wheel it? at the front end oi? the shait if. The roast: ing-cyl-inders are fed with predetermined quantities of the coffee, said quantity heing meas before finally discharged into the intake-month ders. This combined measuring and feed mechanism, which Is likewise actuated from the cylinde shaft, may be desorid as fol lows: Adjacent to the sproclret wheel 37' is a sprocket-Wheel 38, whence passes a sprocketchain 39 over a s rocketvv eel 40 on a camshaft 41, mounts respectivelg, on a bracket 42, Fig. 7, and in the walls of t e chamber t3,- 2 to the main casing t. The rear and .f the shaft 41 carries a crank arm 44, Fig. 8, which in turn is connect legs.

ted into the roasting-cylinders.

by loosenin to support 27 of any given pair oi cylin between the ends ofw ing coupled pivotally to sac et.

pivotally to the adjacent end of a link 45, whose opposite end is coupled to an oscillating lever d6, pivoted to the Wall of the chamber 4:3, the long arm of said lever being coupled pivotally to one end of a link 47, Whose opposite end is secured. to a pin 48, carried by a reciprocating feed-box or cut-0d 49, said inbeing free to operate in a slot 50, formed n the rear member-of the upper overhanging portion 43 of the chamber 43. These overanging members or ortions 43 of the chamber d3 form guides hetween which the box 49 may reciprocate, by the bottom wall between the guides,F1gs. 7, 8. The top of this box 'or receptacle 4-9 is closed by the angle pieeesor plates 51 5'2, res actively, the vertical leg of the member 51 eing connected to the inner end of an adjustin loolt 53, over Whose outer screwthreaded portion operates a nut 54, bearing against the end wall of the box. By turning the nut in either direction the bolt 53, and hence the angle-piece 5i will be moved hack- Ward and forward and its distance fromthe angle-piece 52 ulation serves to adjust the distance between the vertical le' oi the respective anglepieces 51 52, an hence regulates the capacity of the cubic contents between said vertical in this way the quantity of codes admitted from the feed-hopper 2' into the space between the vertical legs of the angle-pieces can be adjusted to a nieety before it is admit The discharge-menthol the hopper 2 may be entirely closed by shoving the member 52 up against the member 51, which may be done the clampirgmut 55, carried by the top We passing. freely through a slot 56, formed in the horizontal lie of said memher 52. The i e tightened and the coffee er 2. ltwill he nut 55 can then entirely cut oil from the hop seen that with rotation of t eshaft 41 a reciprocationvvill he imparted to the box or cut-off 49, each reciprocation taking away a uantity of cot-fee, which is then advanced song the stationary-,.hottorn between the guides .43

the coffee, Whenthe latter drops through the chamber A153, landing on the closed releasingings 57 57, located immediately over tie intake mouths 27 of each paired roasting-cylinders. @nce the coffee has landed on the Wings 57 57 it is released by the following mechanism: Therotating cam-shaft 41 carries at its front end a cam is termed a shoulder 59. Riding-over the Zoom-surface is a lug 60, forming a part of an actuating-lever 61, pivoted at one end to the -bracket 42, the opposite end having coupled thereto the link 62, from whichpivotally depend the pair of links 63 63;, these in turn bethe adjacent ends of the box being supported carefully regulated. This reguntil said bottom no longer serves of the box, the stem of the nut hose cam-surfaces the revolution of the cy inders, means for adjacent cylin er of any discharged end of said member, means for causing the material to travel to the o posite end during conducting the material to the adjacent member of the same pair 'andcausing it totravel back toa point adjacent to the intake end of the first member, and means for discharging the material at said end, substan'' tially as set forth.

3. In a roaster, a suitable burner, a series of roasting-cylinders arranged in volving about a common axis disposed above the burner, means'for feeding thematerial at one end of one 'I'nemberof each pair, means for causing the material to traverse the length of one 0. linder, thence pass into the air and through the latter back to a point a jacent the intake of the first cylinder, a belt for conveying the roasted productfrom the cylinders, and an exhaust 1n the path of the material as finally for removing the chaff an'd'light particles, substantially as set forth.

4. In a roaster, a burner, aseries of roasting-cylinders revolvmg about a common axis disposed above the burner, and a preliminaryroaster superposed above the series of roasting-cylinders, substantiall as set forth.

5. In a roaster, hopper therefor, a series of roasting-cylinders revolving about a common axis mounted in the casing, a reciprocating feeder or cut-off adapted to conduct predetermined quantities of the material from the discharge-mouth of the hopper, apair of hinged wings normally closing against. one another for momentarily intercepting the material delivered by .the cut-off, intermediate driving connections between the cut-ofi and wings for opening the latter at specified times and releasing the material, a portion of the cylinders being provided with intakes for receiving the material so released,'means for discharging the mate rial from the roasters, and an exhaust for carrying voif the chaff and light particles, substantially as set forth.

6. In a roaster, a suitable casing, a hopper therefor, a reciprocating feed-box or cut-oil for abstracting and delivering predetermined quantities of the material, intermediate connections between the'shaft and cut-oif for actuating the latter, a cam on another and pairs recylinders,- an a preliminalv a suita le casing, a feed-' common axis exterior to mders, a burner beneath the cylinders, a hopper, a'feed-box or a rotatable shaft,

the shaft, a lever pivoted at one end and provided with a lug riding over said cam, a pair of hinged wings adapted to fold against one form a temporary su port for the material delivered by the cut-o and intermediate link connections between the lever and W' s for actuating the latter with the turning of the shaft and with the reciprocation of the cut-off, substantially as set forth.

7. In a roaster, a suitable casing, a hopper therefor, a reciprocating feed-box, or cut-oii for abstracting and delivering the material from the hopper, means for adjusting the capacity of the feed-box, a pair of normally closed Wings for receiving the contents of the box, means for o suing the wings at predetermined interva s for releasing the contents intercepted thereby, and a series of roastingcylinders revolving about a common axis for receiving the material released by the Wings, substantially as set forth.

8. In a roaster, one or moreroasting-cylinders revolvin about an axis exterior to the roaster revolving about its own axis an disposed in the path of the volatile products escaping from the material treated in the roasting-cylinders, substantially as set forth.

9. In a roaster, a casing, a preliminary roasting-cylinder revolving about its axis, a'

series oiroastmg cylinders located below the preliminary cylinder and revolving about a the axes of the cylcut oif for the hopper, means for dischargin the material from the feed-box to the prelimina roaster, means for intercepting the materia discharged from the reliminary roaster andsubsequently effect n its release, means for discharging the material thus releasedinto-the series of roasting-cylinders, a common source of heat-su ply for the cylinders, a motor, and suit-ab e gearing for actuating the several movable parts in unison, substantially as set forth. r In testimony whereof I. afiix mysignature in presence of two witnesses.

, NATHANIEL B. POST.

Witnesses:

'EMIL STAREK,

Jos. A. Mrcnna.

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