US1372269A - Amplifier for phonographs - Google Patents
Amplifier for phonographs Download PDFInfo
- Publication number
- US1372269A US1372269A US332609A US33260919A US1372269A US 1372269 A US1372269 A US 1372269A US 332609 A US332609 A US 332609A US 33260919 A US33260919 A US 33260919A US 1372269 A US1372269 A US 1372269A
- Authority
- US
- United States
- Prior art keywords
- plastic material
- layer
- fabric
- adhesive
- horn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 description 53
- 239000004744 fabric Substances 0.000 description 36
- 239000000853 adhesive Substances 0.000 description 27
- 230000001070 adhesive effect Effects 0.000 description 26
- 239000011248 coating agent Substances 0.000 description 18
- 238000000576 coating method Methods 0.000 description 18
- 239000007788 liquid Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 10
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 9
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 9
- 239000011507 gypsum plaster Substances 0.000 description 9
- 239000003292 glue Substances 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 8
- 239000002023 wood Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000006071 cream Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 240000004731 Acer pseudoplatanus Species 0.000 description 1
- 101150018425 Cr1l gene Proteins 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1028—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith
- Y10T156/103—Encasing or enveloping the configured lamina
Definitions
- Figure 1 is a side elevation, partly in section, of ahorn constructed in accordance with this, invention.'
- Fig. 2 is a cross section taken on the line 2-2 of Fig. 1-.
- Fig.v 3 is a section on thepline 3-3 of Fig. l.
- the improved horn or sound board ⁇ 10 may be constructed in anydesired shape, without departing from the spirit of this invention, and it is composed of superposed'layers' of plastic material and fabric Speccation or" Letters Patent.
- plastic material at thereof, against the outer sur- Thislayer 12 maybe ofcanvas, burlap or any analogous fabric', and prior to placing is preferably impregnated with ⁇ -liquidy plastic material and adhesive, such as liquid plaster of Paris and ⁇ glue.
- VTo reinforce' and brace the horn structure 10 a plurality-'of bracing strips 13 of wood, preferably pine, are placed upon the outer surface of the-'fabric layer 12 at circumferentially spaced points, and they extend longitudinally of thehorn structure, serving to ⁇ reinforce the same and lprevent accidentalV breaking gof any part 'thereof Fabric strips .14 are placed over the outer surfaces of the strip 13 andthe coating of plastic material 14 is then placed over the outer surface of thel fabric layer 12, and
- the L neck 15, of the horn .structure is made up of' an inner ⁇ layer 16 of. plastic ma terial, an intermediate layer 17 of fabric, an outer layer 18 of plastic materialv preferably impregnated with glue or analogous adhesiveJ and as shown in Fig. 340i' the drawings', it is necessary to make this portion ofthe horn in sections. andfat times it maybe necessary to make the entire horn in ⁇ sections depending upon the configuration thereof, and when the entire horn ism'adc in section, the adjacent or facing'A edges of ⁇ soI the horn are placed in engagement with each other, after the outer plastic layer 18 has been properly and set or hardened, after i.
- a mold of the shape in which the horn or sounding board is t0, be made is provided, and this mold is first coated, with a coating or' liquid plastic material preferably plaster of Paris, whichis mixed with water oran other suitable liquid to substantially the consistency o f cream.
- a coating or' liquid plastic material preferably plaster of Paris, whichis mixed with water oran other suitable liquid to substantially the consistency o f cream.
- the semi-liquid plastic material is' placed over the mold, preferably with a brush, so as to evenlyl distribute this plastic material over the entire surface of the mold.
- a second quantity of plastic material is made, which comprises a suitable quantity of plaster of Paris, or analogous plastic material which is moistenedandr mixed to a semi-liquid state, by half a tea-cup full of glue' water, to each quart of pure water used in the mixing.
- the glue water is made from four ounces-of powdered glue to one quart of water, pending upon the quantity made.
- From the plaster of Paris or analogous plastic material, mixed with the adhesive, 'the 4semiliquid plastic material is provided,V with which a'second coat orlayerjs put upon the mold, over the first coat, after this first coat has started to harden or set.
- This second coat or layer should be put upon the first layer by a brush of the type used in cleaning and ric, such as" burlap, canvas, or analogous materialwhich has previously been cut to the shape wanted is dipped in the-semiliquid mixture of .plastic material and adhesive and it is then placed over the mold about theVA coats of adhesive material and Iplastic material and smoothed out to lie flat thereover.
- Strips of pine wood are then placed at the desired position circumferentially of the horn structure, 'and extend longitudinally thereover.
- vstrips offabric such as vburla-p, canvas or the like, which have been impregnated with the mixture of plastic material and adhesive, are placed over the outer'surfaces of the longitudinally extending wood bracing strips and av layer of the admixed plastic material and adhesive is then put over these fabric strips and the portions of the first fabric strips which are still-exposed to the desired thickness so as to thoroughly weldthe fabric strips which cover thewood strips to the layer of fabric and, draw the various parts of the' horn or sounding board structure together, forming a unitary structure, which when vhardened or set is removed from .the mold.
- @Ms a new article of manufacture, a soundhorn for .gramophones composed of plaster of Paris, admiXed plaster of Paris and glue, and fabric.
- a sound horn for gramophones composed of a plurality of sections, each of said sections composed of superposed layers of plastic material, adiniXed plastic material and adhesive, and fabric, and strips of fabric placed over the joints of the sections, said connecting fabric strips covered with admixed plastic material and adhesive.
- That method of making sounding horns for gramophones which consists in first coating a mold With liquid plastic material, coating the resulting article with ad-.
- That method of making sounding horns for gramophones which consists in rst coating a mold with liquid plastic material, coating the resulting article with admiXed plastic material and liquid adhesive, and placing a layer of over the coating of admiXed plastic material and adhesive, and placing a layer ⁇ of admiXed plastic material and adhesive upon said fabric layer.
- That method of making sounding horns for gramophones which consists in first coating the mold with liquefied plastic in aterial, coating the resulting article with an admiXed plastic material and liquid adhesive, placing a reinforcing element on said admixed plastic material and liquid adhesive and applying a finishing material to the said reinforcing element.
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
B. BOLTON.l AMPLIFIER FORPHONOGRAPHS. AP
PLICATION FILED OCT-23,1919.
Qteuted Mar. 22, 1921,
Eemian-1in Ejcnlfm- Smm/nto@ 'tain new and useful UNITED* STA-Tas PAT-ENT OFFICE.
BENJAMIN BOLTQN, F SALT LAKE crrY, UTAH."
AMPLIFIER nos, rnonoenae'ns.
Application and october as, 191e.
To all whom may concern Be it known that l, BENJAMIN BOLTON, a
nify the musicor sound reproduced by a l metallic sound to the music which mechanism reproducer, and one which wil-l be free fromV any metallic sounds, resulting inthe reproducing of clear lifelike notes and sounds.
It is -a well known fact thatfin even the most expensive gramophones of approved type now in use, there is more or less 1s reproduced and transmitted through a' metal horn, the action of the metal in the horn often distorting' and ,destroying some of the most beautiful notes reproduced, and it `is an object of this invention to provide a horn or sounding board structure which is en-` tirely free from any metal in its construction, being constructed of plastic material, reinforced by fabric and wood` so as to pro vide a comparatively rigid unbreakable reproducing horn in which the ill effects of metal are entirely eliminated as well as one which will reproduce the finest notes or sounds in their true state. e e Other objects ofthe invention will appear in the following detailed description taken in connection with the accompanying drawing, forming a part of this specification and in which drawing:
Figure 1 is a side elevation, partly in section, of ahorn constructed in accordance with this, invention.'
Fig. 2 is a cross section taken on the line 2-2 of Fig. 1-. Fig.v 3 is a section on thepline 3-3 of Fig. l.
Referring more particularly to the drawings, wherein like characters indicate like and corresponding parts throughout. the several views, the improved horn or sound board `10 may be constructed in anydesired shape, without departing from the spirit of this invention, and it is composed of superposed'layers' of plastic material and fabric Speccation or" Letters Patent.
yhaving a. layerjll of 'the interior A face of which the fabric layer 12 is placed.
upon the inner layer 11, it
Patented Mer. 22, 1921. senat No. ,332,609. l
plastic material, at thereof, against the outer sur- Thislayer 12 maybe ofcanvas, burlap or any analogous fabric', and prior to placing is preferably impregnated with `-liquidy plastic material and adhesive, such as liquid plaster of Paris and `glue. VTo reinforce' and brace the horn structure 10, a plurality-'of bracing strips 13 of wood, preferably pine, are placed upon the outer surface of the-'fabric layer 12 at circumferentially spaced points, and they extend longitudinally of thehorn structure, serving to`reinforce the same and lprevent accidentalV breaking gof any part 'thereof Fabric strips .14 are placed over the outer surfaces of the strip 13 andthe coating of plastic material 14 is then placed over the outer surface of thel fabric layer 12, and
fabric strips 14', entirely inclosing these portions of the horn structure.
The L neck 15, of the horn .structure is made up of' an inner` layer 16 of. plastic ma terial, an intermediate layer 17 of fabric, an outer layer 18 of plastic materialv preferably impregnated with glue or analogous adhesiveJ and as shown in Fig. 340i' the drawings', it is necessary to make this portion ofthe horn in sections. andfat times it maybe necessary to make the entire horn in `sections depending upon the configuration thereof, and when the entire horn ism'adc in section, the adjacent or facing'A edges of` soI the horn are placed in engagement with each other, after the outer plastic layer 18 has been properly and set or hardened, after i.
which strips 19 the 'meeting edges of the'sections and a layer of coatingQO of the plastic material impregnated .with glue is then placedl over the strips 19 and the layer 18 of plastic -material, thoroughly welding the sections of the horn or sounding board in properly con- Y nected position.
In constructing the horn, or sounding board, the following method is carried out. A mold of the shape in which the horn or sounding board is t0, be made is provided, and this mold is first coated, with a coating or' liquid plastic material preferably plaster of Paris, whichis mixed with water oran other suitable liquid to substantially the consistency o f cream. However, prior to the coating of the mold, it is oiled or greased, so that 'the cast when set or hardof fabric are placed overened will easily come off or free from the mold. The semi-liquid plastic material is' placed over the mold, preferably with a brush, so as to evenlyl distribute this plastic material over the entire surface of the mold. After the mold is coated vwith' the plastic material of substantially the consistency of cream, a second quantity of plastic material is made, which comprises a suitable quantity of plaster of Paris, or analogous plastic material which is moistenedandr mixed to a semi-liquid state, by half a tea-cup full of glue' water, to each quart of pure water used in the mixing. The glue water is made from four ounces-of powdered glue to one quart of water, pending upon the quantity made. From the plaster of Paris or analogous plastic material, mixed with the adhesive, 'the 4semiliquid plastic material is provided,V with which a'second coat orlayerjs put upon the mold, over the first coat, after this first coat has started to harden or set. How- 'sufficiently ever,'.care should be taken to apply Vthis second layer or-coat of plastic material impregnated with adhesive, before the first coat becomes thoroughly hardened, other-l Wise, they willnot 'pi'c' perly co-mingle to form the innermost portion of the sounding board4 or horn, etc. This second coat or layer should be put upon the first layer by a brush of the type used in cleaning and ric, such as" burlap, canvas, or analogous materialwhich has previously been cut to the shape wanted is dipped in the-semiliquid mixture of .plastic material and adhesive and it is then placed over the mold about theVA coats of adhesive material and Iplastic material and smoothed out to lie flat thereover. Strips of pine wood, are then placed at the desired position circumferentially of the horn structure, 'and extend longitudinally thereover. After the. strips of wood, preferably pine or analogous soft wood have been placed,vstrips offabric, such as vburla-p, canvas or the like, which have been impregnated with the mixture of plastic material and adhesive, are placed over the outer'surfaces of the longitudinally extending wood bracing strips and av layer of the admixed plastic material and adhesive is then put over these fabric strips and the portions of the first fabric strips which are still-exposed to the desired thickness so as to thoroughly weldthe fabric strips which cover thewood strips to the layer of fabric and, draw the various parts of the' horn or sounding board structure together, forming a unitary structure, which when vhardened or set is removed from .the mold.
I n makinga horn or soundingl board in sections, the/joints are wrapped `or covered with strips of canvas or analogous fabric'which or Ain such proportion, de-
to provide a relatively thin, even layer, thereof, after which the layer of fab-` but; l
has been previously impregnated with the admixed plastic material and adhesive, after which this fabric -is coated over with a coating or layer of the a'dmix'ed plastic material and-adhesive, thoroughly welding the various parts or'sections of the sounding board i or horn structure.
While in the'drawings, av horn, such asidesigned for use on an approved type of gramophone is shown, it is to be understood that sounding boards may be made for /lining music rooms in accordance vvitlrthe above method, the bodies of the various typs of instruments, such as 'the violins, may
lbe made accordingl to this method, so as to provide sounding 'boards which are free' from any 'metallic sound, and which will reproduce or transmit .sounds or notes in their true state; i l y The plastic' material is what is known` as a dead material, however, when' it is employed'infconnection with the fabric and adhesive, a very liv'sound deflecting or carryw I claim: l. Asl 'a sound horn for ,gramophones, comprising a layer of plastic material, a layer of admixe'd plastic material and adhesive, and a layer of fabric: l
2. As a new article of Amanufacture, a
new article of manu-facture, 'a
sound horn for gramophones composed of plastic material, fabricy tand reinforcing strips of wood.. I
iio
3. As a new article of manufacture', sound horn for gramophones composed of'a layer c of plastic material, a layer of admixed plastic material and adhesive, a layer of fabric, and a layer of admixed plastic material and adhesive uponsaid fabric layer.
4. As a new article of manufacture, a sound horn for gramophones composed of a` layer o f plastic material, a layerof admixed plastic material and adhesive, a layer of fabric,A
` longitudinally extending bracing strips of wood upon said fabric layer, and a coatingl of admixed adhesive and `,plastic material upon said bracing strips and fabric layer.
5. As a new article of manufacture, a,
sound hornV for gramophones composed of la layer of plaster of Paris, a vsecond layer of adm ixed plaster of Paris and glue, av layer of fabric upon said admixed layer,
and a slayer and glue upon said fabric layer.
@Ms a new article of manufacture, a soundhorn for .gramophones composed of plaster of Paris, admiXed plaster of Paris and glue, and fabric.
7. As a new article of manufacture, a sound horn for gramophones composed of a plurality of sections, each of said sections composed of superposed layers of plastic material, adiniXed plastic material and adhesive, and fabric, and strips of fabric placed over the joints of the sections, said connecting fabric strips covered with admixed plastic material and adhesive.
8. That method of making sounding horns for gramophones Which consists in first coating a mold With liquid plastic material, coating the resulting article with ad-.
mixed plastic material and liquid adhesive, placing a layer of reinforcing fabricover the coating of admiXed plastic material and adhesive, and placing a layer of finishing material over the saidfabric layer.
9. That method of making sounding horns for gramophones which consists in rst coating a mold with liquid plastic material, coating the resulting article with admiXed plastic material and liquid adhesive, and placing a layer of over the coating of admiXed plastic material and adhesive, and placing a layer `of admiXed plastic material and adhesive upon said fabric layer.
oflradmixed plaster of Paris reinforcing fabric 10.Tliat method of making sounding horns for gramopliones which consists in coating a mold With liquefied plastic material,
coating the resulting article With admiXed horns for gramophones which consists in coating amold With liquefied plastic material,
coating the resulting article with admiXed plastic material and liquid adhesive, placing a layer of reinforcing fabric over the coating of admiXed plastic material and adhesive, placing reinforcing strips of Wood upon said fabric layer, placing strips of fabric over said reinforcing strips, and coating said strips of fabric and fabric layer with an admixtur'e of plastic material and adhesive.
l2. That method of making sounding horns for gramophones which consists in first coating the mold with liquefied plastic in aterial, coating the resulting article with an admiXed plastic material and liquid adhesive, placing a reinforcing element on said admixed plastic material and liquid adhesive and applyinga finishing material to the said reinforcing element.
BENJAMIN BLTUN.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US332609A US1372269A (en) | 1919-10-23 | 1919-10-23 | Amplifier for phonographs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US332609A US1372269A (en) | 1919-10-23 | 1919-10-23 | Amplifier for phonographs |
Publications (1)
Publication Number | Publication Date |
---|---|
US1372269A true US1372269A (en) | 1921-03-22 |
Family
ID=23299000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US332609A Expired - Lifetime US1372269A (en) | 1919-10-23 | 1919-10-23 | Amplifier for phonographs |
Country Status (1)
Country | Link |
---|---|
US (1) | US1372269A (en) |
-
1919
- 1919-10-23 US US332609A patent/US1372269A/en not_active Expired - Lifetime
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