US1618913A

US1618913A - Drying apparatus

Info

Publication number: US1618913A
Application number: US398092A
Authority: US
Inventors: Joseph L Buckley
Original assignee: Proctor & Swartz Inc
Current assignee: Proctor & Swartz Inc
Priority date: 1920-07-22
Filing date: 1920-07-22
Publication date: 1927-02-22
Anticipated expiration: 1944-02-22

Description

Feb. 22, 1927.

1,618,913 J. L. BUCKLEY DRYING MPARATUS 4 Sheets-Sheet 1 Filed July 22. 1920 1,618,91 Feb. 22, 1927. J L. BUCKLEY 3 DRYING APPARATUS Filed July 22- 9 4 Sheets-Sheet 2 l G I h n un it-1o 51:;vidolnl- 1.1

z E i: E K

Fe 2 192 1 b 7 J. L. BUCKLEY' DRYING APPARATUS Filed July 22. 1920 4 Sheets-Sheet 4 Patented Feb. 22, 1927.

UNITED STATES PATENT OFFICE.

JOSEPH L. sooner, or maximum, new .rnasnr, Assicnoa, BY misim assmnnnn'rs, 'ro raoc'ron a SWARTZ, INCORPORATED, or rnrnannnrma, rmmsvnvmm, a

CORPORATION 01' PENNSYLVANIA.

nmrmo APPARATUS.

'Appnoation fled July 22,

This invention relates to an im rovement in apparatus for dr ing or'conditionin articles composed of cllly, porcelain or the ike, with the object in view of providing such an apparatus which occupies a minimum of floor space while being capable of rapidly and simultaneously drying a large number of articles.

Another object is to provide such an appgratus in which the articles to be dried may rogrcssively subjected to appropriate con itions of treatment and in appropriate positions, in order to produce a uniform product.

Another object is to provide such an apparatus in which the articles to be dried may be subjected to air currents impin ing upon them from many differentv directions, during the course of their travel through the apparatus.

Another object consists in providing certain improvements in the form, construction and arrangement of the several parts whereby the above named and other objects may be effectively attained.

Practical embodiments of the invention are represented in the accompanying drawings, in which:

Fig. 1 represents a longitudinal vertical section through the apparatus.

Fig. 2 represents an end view of the same.

Fig. 3 represents a section taken in the plane of the line III-1110f Fig. 1, looking in the direction of the arrows.

Fig. 4 represents a longitudinal vertical section through a modified form of apparatus.

Fig. 5 re resents an end elevation .of the apparatus s own in Fig. 4.

Fig. 6 represents asection taken in the plane of the line VL-VI of Fig. 4, looking m the direction of the arrows.

Referring to the preferred form shown in Figs. 1, 2 and 3, the apparatus includes a rectangular enclosure or housing 1.

This construction is conventionally shown in the drawings, but is fully described in my (o-pend ng application, Serial No. 353,226, filed January 22, 1920. Th s construction is. generally considered, of standard form, but as set forth in said co -pending application. I prefer to make use of certain special features such as composing the inner surface of the plates which constitute the 1920. Serial No. 898,002.

walls of galvanized steel, in order to revent rust and soldering all openings into the interior of the plates which may be made during the fitting of the parts, in order to prevent access of moisture to the insulating material.

The enclosure 1 is divided into two main sections 2 and 3 by means of a vertical partition 4 which abuts the top of the housing and extends down about A of the way toward the bottom thereof. This partition is secured to and supported by the framework of the housing. As a result of this main division, I am enabled to provide substantial differences in the conditions of heat and moisture between the sections 2 and 3, so that the articles to be dried may be appropriately treated in each of the two. sections.

The said sections are each sub-divided by means of other transverse partitions so as to include what I may call a diffusing chamber, a vertical channel, a horizontal channel and a vertical duct. These last named par titions consist of a vertical partition 5, vertical partition 6, horizontal partition 7 and slanting partition 8. Each of these partitions extends from side to side of the enclosure and is suitably secured to and held in osition by the framework of the enclosure.

he partition 5 is perforated so as to be of rate-like formation, while the partitions 6,

and 8 are solid. The artitien 6 is composed of thermo-insulate those described as being emplo ed in the construction of the housin 1. e difiusin chamber mentioned is enoted by 9 and is ounded by the partitions 5, 7, 8 and the fan to be hereinafter described. The horizontal channel is marked 10 and is bounded by the partition 7 and the bottom of the casing 1. The vertical channel is indicated by 11 and is defined by the

partitions

4 and 5. The duct is marked 12 and is defined by the artitions 6 and, 8 and the fan.

e parts just mentioned are embodied in the section 2 and, as already indicated, the section 3 is quite similarly constructed. It has a vertical grated partition 13 which is arranged and supported in the same manner as the (partition 5; a partition 14 which correspon s to the partition 7 and a partition 15 which substantially corresponds to the partition 8. However, this partition 15 is somewhat longer than the partition 8 and is plates similar to.

interrupted centrally by an aperture 16 for permitting the passage of the tra s conveymg the articles to be dried, as wi 1 be hereinafter described. Furthermore this section 3 has no partition that corresponds to the partition 6. In the section 3 the difi'using chamber is bounded by the partitions 13, 14, 15 and a second fan to be hereinafter described, and this chamber is marked 17. The horizontal channel is denoted b 18 and is bounded by the partition 14 an bottom of the housing 1. The. vertical channel is indicated by 19 and is defined by the partitions 4 and 13. The vertical duct is denoted by 20 and is bounded by the partition 15, the adjacent end of the housing 1, an the said last named fan.

Means is provided for generating an air current within each of the sections 2 and 3 and, referring to the section 2, this means consists of a fan 21 that is mounted on a shaft 22 which is journaled in a bearing 23 secured to the partition 6. The other end of the shaft 22 carries a bevelgear 24 which mates with a similar gear 25 thatis fixed on the end of a cross shaft 26 which extendslaterall to the exterior of the housing 1 and is provided on its outer end with a belt pulley 27 designed to be driven from a suitable source of power, not shown. The fan 21 is surrounded by a circular guard or shield 28 which is supported by the partition 8 and a horizontally disposed transverse plate 29 which extends from side to side of the housing 1 and abuts the top 10f the partition 6.

This late 29 also extends to the adjacent end 0? the housing 1 exqapt that it is interrupted by an aperture 30 which permits the ass of the trays carrying the articles to dried therethrough. 'The' bottom of the partition 6 is bent so as to lie parallel with the partition 8 and is also connected to a horizontally disposed transverse late 31, which extendsto the adjacent en wall of the housin .1 with the exception that it is interrupts by an a rture '32 which, like the aperture 30, is esigned to permit the peasgsdpf the trays carrying the articles to Referring. to the section 3- the fan is indicated by 33 and 1s mountedon a shaft 34 which is journaled in a bearing 35 fixed to the adjacent and of the housing. The shaft 35 carries a bevel gear 36 which mates with a similar gear 37 secured to the end of a transverse shaft 38 which carries a belt pulicy 39 on its other end so that it may be driven from a suitable source of power, not shown.

As a result of the structure just described, it will be seen that the fans 21 and 33 will, when driven, provide currents of air within the housing 1, and the course and efiect of these currents will be hereinafter more fully described.

' of the Means is included for heating the air currents, and this means consists of radiators which are located within the difiusing chambers 9 and 17. These radiators are transversely disposed with respect to the housing 1 and are arran ed in staggered vertical relation. The ra iators in the chamber 9 are denoted by 40, 41, 42, 43 and 44. They are all of substantially the same capacity and spaced substantially equal distances apart. In the chamber 17 the radiators are marked 45, 46, 47, 48, 49 and 50. These radiators are spaced substantially equal distances a art, but it will be noted that radiators 46, 4 and 48 are substantially twice as large as d radiators to inclusive, and that radiators 49 and 50 are substantially three times as lar as radiators 40 to 45 inclusive. As a resu t of this arrangement, it will be clear that the capacity for heating the chamber 17 is much greater than that for heating the chamber 9 and that it is possible to gradually and greatly increase the heat sup ly to the chamber 17 as the location of the ihn therein is approached. Thus, the articles to be dried may be progressivel subjected to a hotter and drier air as they a vance through the housing.

These radiators are preferably composed of cast iron in order to eliminate rusting and maybe sup orted by the angle iron framework of the ousing. I prefer to equip each radiator with its own controlling means so as to be able to regulate the supply of steam to each independently of the others, for the urpose of varying the temperature lfierent radiators as desired. Such controlling means may be of any well known or approved form; and, as they are well understood by those acquainted with this art, no illustration or description is necessary.

The apparatus also includes means for progressively transporting the articles to be dried through the enclosure, and this means comprises two sets of sprocket wheels, each set bein mounted adjacent one side wall of the housing 1. One set of these sprockets is diagrammatically re resented in 'g. 1, and the sprockets are indicated by 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. It will be understood that the other set of sprockets is exactl like that just described and that the'mem ers of the said other set are mounted in axial alinement with the members of the first set, each corresponding pair of members in the two sets being mounted on shafts that are journaled in the framing of the sides of the housing. These shafts are denoted by 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, (fund 78. .Endless' sprocket chains, one of which is marked 79, pass around each set of fiie'said sprockets as represented, chiefly diagrammatically, in Fig. 1, and the trays 80 which immediately under the influence of gravity.

the trays will be suspended from the chains Mechanism is provided for actuating the chains so as to convey the trays through the enclosure, which mechanism is engaged with the shaft carrying the sprocket 62 and consists of a worm wheel '82 fixed to said shaft 76, which worm wheel meshes with a worm 83 that is connected by a suitable train of shafts and gearing with a belt ulley 84 that is to be driven from a suite le' source of power, not shown. It will be noted that the drive for the said chains trays is separate from the drives for the fans, so that the latter maybe continued in operation even though the chains and hence trays are motionless. This feature is desirable since, if the circulation of air were stopped when the chains were motionless, the articles which happened to be ad'acent one of the radiators would be apt to e injured b the excessive heat.

The ousing 1 is povided with a suitable loading and unloading aperture 85, through which the articles to be dried may be placed on the trays 80 and, removed from the said trays, after they have passed through the apparatus. The partition 6 is composed of thermo-insulated material already described, so as to prevent the escape of the hot air through the opening 85, which escape, if it occurred, would interfere with the work of.

the attendant as well as decrease the economy ofthe apparatus. a

In operation, heat will be supplied to the radiators 40 to 50 inclusive, and the fans 21 and 33 and chains 79 and its mate set in operation. The articles to be dried are now placed upon the trays 80 as the latter slowly pass the feed opening 85. As the articles pass up between the partition 6 and the adjacent end wall of the housing 1, it will be noted that they are out of contact with the heated air current, since they are shielded by the said partition. Nevertheless, they are subjected to a certain elevated temperature which serves to initiate the drying operation. As the articles pass the sprockets 51 and 52, they reach a more elevated temperature and as they pass downwardly from the sprocket 52 to the sprocket 53, they begin to be acted upon b the heated air current generated by the an 21 and heated by the radiator 40. This air current impinges against the articles substantially in a horizontal direction, although the air is somewhat broken up by passing through the radiator 40 so as to attack the articles at slight- 1y diiferent angles. After the articles have rounded the sprocket 53 and begin their travel upwardly toward the sprocket 54, they continue to be subjected to a similar air which carry the current except that the current is somewhat warmer because it has assed through the radiator 41 as well as t e radiator 40, and is somewhat more diffused because it has been broken up by the pipes of both said radiators. The downward travel of the articles from the sprocket 54 to the sprocket 55 causes them to be subjected to similar but stronger influences and the same is true of their upward passage from sprocket 55 to sprocket 56. After rounding the latter and starting through the vertical channel 11, toward the sprocket 57 the articles are subjected to a still hotter air current owing to its passage through the radiator 44 and the air is much more diffused and its direction of impingement against the articles very much diversified because of its being broken up by the grate-like partition 5. Moreover the partition 4 obstructs the lateral movement of the air current and directs it downwardly so that it engages the articles while moving in the same direction as that in which they are traveling.

After the articles havepassed the sprocket 57 and start to ascend in. the duct 19 they are subjected to heated and diii'used air currents generated by the fan 33 and moving laterally or horizontally, as well as by part of the said air currents generated by the said fan which impinge against the partition 4 and are turned downwardly so as to contact with the articles while moving oppositely thereto but in a similar path. During the travel from the sprocket'58 to the sprocket 59, the articles are subjected to still greater heat because of the size of the ra-. diator 46, and this heat is increased during each successive sta e of travel from sprocket to s -rocket until t 1e highest temperature is reac edwhile the articles are moving downwardly between the radiators 49 and 50. After passing between the last named radiators, the articlestravel through the opening 16 and enter the horizontal channel 18 through which they ass and immediately enter and ass throng the horizontal channel 10. Villiile passing through the channel 18, it will be seen that the articles are enaged by an air current, generated by both gens, which moves in the direction opposite to the travel of the articles. In the channel 10 the articles are attacked by air currents, generated b both fans, which move in the same direction as the articles. Upon reaching the end of the channel 10 the articles pass up through the opening 32 and may be removed by the operator through the door or aperture 85.

I wish to call attention to the fact that, at the time the articles. are rounding the sprocket 57, they are subjected to a number of difl'erent air currents, that is, to air currents moving in a number of dill'erent directions, which directions include vertical move ment and horizontal movement in opposite directions; This is a feature of im ortance in that this condition insures comp ete contact of the air with all parts ofthe articles. Furthermore, when the articles move into the chamber 3, the air current which acts upon them is driven in a direction opposite from the current in the chamber 2, so that the direct eflect of the air is upon the side of the articles opposite to, that which the air directly engages in the chamber 2. As will beseen from the arrows, Fi 1, the air current generated by the fan in each chamber follows an elliptical course movin outwardly from the fan, downwardly t rough the vertical channel 11 or 19, as the case may be, backwardly through the horizontal channel 10 or 18, as the case may be, and returning to the fan through the duct 12 01-20, as the case may be.

Upon the return run of the articles through the horizontal channels 18 and 10, they are not sub 'ected to such intense conditions of heat a air current, so that there is opportunity for them to return somewhat toward normal atmospheric conditions before leaving the apparatus. This is desirable as it avoids a sudden change in the conditions affecting the articles. 7

Referring to the modified form shown in Figs. 4 to 6 inclusive, it will be observed that the general arrangement is substantially the same as that of the preferred form. One of the chief distinctions resides in the fact that this modified form of apparatus is designed to occu y two floors or stories of a building so that it may, if'desired} be loaded from'an fier floor and unloaded on a lower floor.

sis frequently a material advantage in that the uper floor of a building may be ada ted to e production of the articles up to t e stage at which they should enter the drying apparatus, and the lower floor used for the treatment of the articles after they have passed through theapparatus. This also serves to convey the articles from the one floor to the other, thus obviating. the necessity of extra transportation means. a

In this form the intermediate floor is denoted b 86; The housing is marked 87, and inc udes the two

sections

88 and 89 di-' vided by the partition 90. The two difl'usin chambers are marked 91, 92, and are defined by

partitions

93, 94, 95, 96, 97, 98, the fans 99 and 100 and partitions 101, 102. The partitions 93 and 94 are of grated formation ike the artitions 5 and 13 in the preferred form. e vertical channels are marked 103, 104, and the

horizontal channels

105, 106. The ducts are 107 and 108. Insulated par; titions 109,110, are arranged at each end, and are similar in function to the partition 6 in the preferred form. The housing has four openings 111, 112, 113, 114, so that it may be loaded and unloaded on either floor and which means is denoted at either end. The two insulated partition 109, 110, serve toprotect the operators at any of the loading and unlbading openings. The radiators in chamber 91 are marked 115, 116, 117, 118 and 119; and those in chamber 92 are denoted by 120,121, 122, 123 and 124. One set of sprockets is represented by 125,126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 13s and 139. These sprockets are mounted on

shafts

140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, and 154. .11; will be understood that the other set of sprockets is exactly like that just described and. that the sprockets composing it are mounted on the shafts just mentione each set of sprockets being adjacent a side wall of the housing as is the casein the preferred form.

The means for driving the fan 99 is indicated generally by 155and the means for driving the fan 100 by 156. These means are similar to those shown in the preferred form. The s rocket chains, one of which .is represent by 157, are driven by a means similar to that employed in the preferred form, generally by 158. The trays are marked 159.

It will be observed that the ends of the housing 87- are elevated above the central portion thereof, and, this is done in order to accommodate the sprockets 125 and 137 which are so located as to roperly guide the chains between the artitlons 109, 110, and the adjacent ends 0 the housing. The apertures through which the chains pass 1n their last named travel are marked 160, 161, 162 and 163,

The method of operation of this form is substantially the same as that described in connection with the preferred form and will doubtless be understood without repetitlon. It may simply be that the articles may be loaded and unload through any one of the openings 111, 112, and 11 4, according as the conditions of treatment maybe desired to be varied.

In reference to all theforms, it will beobserved that the diameter of all the sprockets, except those at'the endsof the horizontal channel or channels, is greater than the distance between the two s rockets which are immediately connected with the sprocket in question b the chain. Hence the sections of travel of the chain between the sprockets are at a slight angle to the vertical so as to cause an angular contact of even the vertically moving currents with the articles. In other words, at no stage of the travel of the articles, do the trays completely protect them from the air current.

It will be understood that various changes me be resorted to in the form, construction an arrangement of the several parts without departing from the irit and scope of the invention and hone e do not intend to be limited to the details herein shown and decomprising, an enclosure, a vertical transscribed except as they may be included in the claims.

\Vhat I claim is:

1. Apparatus of the character described comprising, an enclosure, and carrier means for transporting articles to be dried from end to end of said enclosure, the enclosure having an upper and lower loading and unloading openings, whereby the articles may be placed on the carrier from. an elevated position and removed therefrom at a lower position.

2. Apparatus of the character desc ribed comprising, an enclosure; and carrier means for transporting articles to be dried from end to end of said enclosure, the enclosure having a pair of loading and unloading openings at each end in the upper and lower portions thereof, whereby the articles may be loaded or unloaded at either end of the closure and at an elevated or a lowered position.

3. Apparatus of the character described comprising, an enclosure, a vertical transverse partition located substantially centrally thereof for dividing the enclosure into two sections while permitting communication between said sections, a horizontal artition in each section spaced from the ottom of the enclosure, and means in each section for generating air currents in op osite directions substantially arallel wit the horizontal partitions an against the vertical partition.

4. pparatus of'the character described comprising, an enclosure, a vertical trans verse partition located substantially centrally thereof and spaced from the bottom of the enclosure for dividing the enclosure into two sections while permitting communication between said sections, a horizontal partition in each sectionv spaced from the bottom of the enclosure and located below the bottom of the vertical partition, and means in each section for generating air currents in opposite di ections substantially parallel with the hori ontal partitions and against the vertical partition.

5. Apparatus of ,the character described comprising, an enclosure, a vertical transverse partition located substantially cen'- trally thereof and abutting the top and spaced from the bottom of the enclosure for dividing the enclosure into two sections while permitting communication between said sections, a horizontal partition in each section spaced from the bottom of the enclosure and located below the bottom of the vertical partition, and means in each section for generating air currents in opposite directions substantially parallel with the horizontal partitions and against the vertical partition.

6. Apparatus of the character described verse partition located substantially centrally thereof for dividing the enclosure into two sections while permitting communication between the, said sections, a vertical transverse grated artition located in each section and space from said first named partition, a horizontal partition in each section spaced from the bottom of the enclosure, and means in each section for generating air currents in opposite directions substantially parallel with the horizontal partitions and against the grated and first named partitions.

7. Apparatus of the character described comprising, an enclosure, a vertical transverse artition located substantially centrally t ereof and spaced from the bottom of the enclosure for dividing the enclosure into two sections while permitting communication between said sections, a vertical transverse grated partition located in each section and spaced from said first named partition, said grated partitions being spaced from the bottom of the enclosure but extending below the bottom of said first named partition, a horizontal artition in each section spaced from the ottom of the enclosure, and means in each section for generating air currents in o posite directions substantially parallel wit the horizontal partitions and against the grated and first named partitions.

8. Apparatus of the character described comprismg, an enclosure, a vertlcal transverse partition located substantially central- 1y thereof and spaced from the bottom of the enclosure for dividing the enclosure into two sections while permitting communica tion betweep said sections, a horizontal artition in each section spaced from the ottom of the enclosure and located below the bottom of the vertical partition, a vertical transverse grated artition located in each section and s ace from said first named partition, sai grated partitions being connected with said horizontal partitions, and means in each section for generating air currents in opposite directions substantially parallel with the horizontal partitions and against said grated and first named part1- tions."

9. Apparatus of the character described comprising, an enclosure, a vertical transverse partition located substantially centrally thereof and spaced from the ottom of the enclosure for dividing the enclosure into two sections while permitting communication between said sections, a horizontal artition in each section spaced from the bottom of the enclosure and located below the bottom of the vertical partition, a vertical transverse grated partition located in each section and s aced from said first named partition an from the top of the enclosure, and means in each section for generating air currents in op site directions substantially parallel with the horizontal partitions and against said grated and first named partitions.

10. Apparatus of the character described comprising, an enclosure, a vertical trans verse partition located substantiall centrally thereof and spaced from the ottom of the enclosure for dividing the enclosure into two sections while permitting communication between said sections, a horizontal artition in each section spaced from the partitions and against said grated and firs named partitions.

11. Apparatus of the'character described oomprismg, an enclosure, a vertical transverse partition located substantially centrally thereof for divi the enclosure into two sections while permitting communication between said sections, a horizontal partition in each section spaced from the bottom of the enclosure, means in each section for generating air currents in o posite directions substantially clparallel with the horizontal partitions an a ainst the vertical partition, carrier means or transporting the articles to be dried from end to end of said enclosure, said enclosure having loadi and unloading openings in the ends thereo and insulated transverse partitions located adjacent said ends of the enclosure for protectmg said openings and providing protected passageways for the carrier means while the articles are being loaded thereon and unloaded therefrom.

12. Apparatus of the character described comprising, an enclosure carrier means for transporting articles to be dried from end to end thereof, and said enclosure having loadin and unloading openings in the ends thereo the end portions of the enclosure being elevated for receiving elements of said carrier means in order to provide an extended travel of the carrier means adjacent the ends of the enclosure to facilitate the loading and unloadin of the articles.

In testimony, that l claim the foregoing as my invention, I have signed my name, this nineteenth day of July nineteen hundred and twenty.

- JOSEPH L. BUCKLEY.

enclosure, and means in each section for generating air currents in opposite directions substantially parallel with the horizontal partitions and against said grated and first named partitions.

10. Apparatus of the character described comprising, an enclosure, a vertical transverse partition located substantiall centrally thereof and spaced from the ottom of the enclosure for dividing the enclosure into two sections while permitting communication between said sections, a horizontal artition in each section spaced from the ottom of the enclosure and located below the bottom of the vertical partition, a vertical transverse grated partition located in each section and spaced from said first named partition, said grated partitions being spaced from the top of the enclosure and connected with said horizontal partitions, and means in each section for nerating air currents in opposite directions substantially parallel with the horizontal partitions and against said grated and first named partitions.

11. Apparatus of the character described comprising, an enclosure, a vertical transverse partition located substantially centrally thereof for dividing the enclosure into two sections while permitting communication between said sections, a horizontal partition in each section spaced from the bottom of the enclosure, means in each section for generating air currents in o posite directions substantially parallel wit 1 the horizontal partitions and a ainst the vertical partition, carrier means or transporting the articles to be dried from end to end of said enclosure, said enclosure having loadin and unloading openings in the ends thereo and insulated transverse partitions located adjacent said ends of the enclosure for protectmg said openings and providing protected passageways for the carrier means while the articles are being loaded thereon and unloaded therefrom.

In testimony, that claim the foregoing as my invention, I have signed my name, this nineteenth day of July nineteen hundred and twenty.

JOSEPH L. BUCKLEY.

CERTIFICATE OF CORRECTION.

Pa tent No. l, 618, 913.

Granted February 22, 1927, to

JOSEPH L. BUCKLEY.

It is herebycertif'ied that the nsme of the assignee in the above numbered patent was erroneously written and printed "Proctor & Swartz, Incorporated".

wheress ssid name should have been written and printed ss "Proctor & Schwartz. Incorporated", as shown by the records of assignments in this office; snd thst the said Letters Patent should be read with this correction therein the! the ssme rnsy conform to the record of the case in the Pstent Off ice.

Signed and sesled this 4th dsy of October, A. D. 1927.

Sesl.

M. J. Moore,

Acting Commissioner of Patents.

CERTiFiCATE OF CORRECTION.

Patent No. 1,618,913. Granted February 22, 1927, to

JOSEPH L. BUCKLEY.

It is herebycertified that the name of the assignee in the above numbered patent was erroneously written and printed "Proctor & Swartz, Incorporated", whereas said name should have been written and printed aa "Proctor & Schwartz. Incorporated", as shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the aame may conform to the record of the case in the Patent Office.

Signed and sealed this 4th day of October. A. D. 1927.

M. J. Moore, Seal Acting Gommiaaioner of Patenta.