baber/WOPTO huggingface dataset:
Patent JP-2008144446-A (JP)
Title: Composite segment
Inventor: SUDO OSAMU
IPC: E21D11/04
Filed: 2006-12-08
Abstract: <P>PROBLEM TO BE SOLVED: To provide a composite segment having a simple structure and reduced number of constituent members to facilitate its manufacture, having superior construction property, and capable of shortening the manufacturing time to reduce manufacturing costs and to provide a connection structure of the composite segments having a simple structure and capable of connecting the segments in the axial direction and the peripheral direction easily and securely and reducing the costs greatly.  <P>SOLUTION: A plurality of composite segments are connected in the axial direction and the peripheral direction of a tunnel to construct a tunnel wall. This composite segment is composed of a pair of walls 1a, 1b in the axial direction provided at a predetermined interval in the axial direction of the tunnel, skin plates 5 joined with outer peripheral sides or the outer peripheral side and an inner peripheral side of the walls 1a, 1b in the axial direction, peripheral direction walls 8 joined with the walls 1a, 1b in the axial direction and both end parts of the skin plates 5, and concrete 40 placed in a region surrounded by them. The pair of walls 1a, 1b in the axial direction are formed by steel pipes 2a, 2b provided on the inner peripheral sides or the outer peripheral sides of the walls and main girder boards 3a, 3b joined with outer peripheral sides or inner peripheral sides of the steel pipes 2a, 2b.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2008151607-A (JP)
Title: Method and apparatus for positioning mark using template matching
Inventor: FUJIE KIMIKO
IPC: G06T1/00
Filed: 2006-12-15
Abstract: <P>PROBLEM TO BE SOLVED: To carry out positioning precisely without the need for processing other than template matching for performing the positioning minutely, even in the case where the size of a recognized mark differs from that of a mark on a template image.  <P>SOLUTION: The mark positioning uses the template matching, wherein a template image including the mark is moved sequentially on a recognized image, and the maximum correlation position is obtained. The mark positioning grasps a peak overall shape, defines a narrow range around the peak top in the case of a sharp peak, or a wide range containing the whole area of the flat top in the case of a flat peak, as a sampling area, and calculates a detection position from a weighted average of correlation values in the sampling area.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2008149268-A (JP)
Title: Apparatus and method for treatment of pole transformer
Inventor: MURAKAMI YOSHIAKI
IPC: B09B5/00
Filed: 2006-12-18
Abstract: <P>PROBLEM TO BE SOLVED: To provide an apparatus for cleaning a pole transformer which has excellent treatment efficiency in treating a pole transformer using a PCB-containing insulating oil and a method of treating a pole transformer which enables the cleaning of the pole transformer with excellent treatment efficiency.  <P>SOLUTION: The apparatus for treating the pole transformer is used to remove, with a cleaning solution, the insulating oil adhered to the inside of the enclosure of the pole transformer using the PCB-containing insulating oil, without crushing the enclosure, and has a cleaning unit for the enclosure. The enclosure-cleaning unit has a lid part which can block the opening of the enclosure and is used to block the opening and a cleaning solution fluidizing mechanism which causes the cleaning solution to be contained in the enclosure and fluidizes the cleaning solution inside the enclosure with the opening blocked. The cleaning solution fludizing mechanism is fixed to the lid part.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2008151096-A (JP)
Title: Control device of variable valve train
Inventor: TSUCHIDA TOSHIHIRO
IPC: F02D45/00
Filed: 2006-12-20
Abstract: <P>PROBLEM TO BE SOLVED: To eliminate influence of a dead zone when a deviation is generated between a dead zone width learned in advance and an actual dead zone width.  <P>SOLUTION: A control device of a variable valve train for adjusting a converting angle by operating an actuator learns and stores a dead zone region of the actuator, offsets a current command so as to pass through the dead zone region, and calculates first time when the current command value is offset higher than an upper limit of the dead zone region in a prescribed period and second time when the current command value is offset lower than a lower limit of the dead zone region (S511, S521), moves and corrects the learned and stored dead zone region to the upper limit direction when the first time is longer than the second time, and moves and corrects the learned and stored dead zone region to the lower limit direction when the first time is shorter than the second time (S515-S518).  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2007071895-A (JP)
Title: Foreign substance inspection device
Inventor: YAKIDA KIYOSHI
IPC: G01N21/90
Filed: 2006-12-21
Abstract: <P>PROBLEM TO BE SOLVED: To provide a foreign substance inspection device that eliminates the dead angle of a lighting region and imaging region of an inspected object, and inspects existence of a suspension foreign substance in a vessel of the inspected object accurately without stopping the product line.  <P>SOLUTION: The foreign substance inspection device comprises: an inspection table 10, where a mounting section 10a formed of a translucent member serving as an optical filter for preventing irregular reflection is disposed around the turning axis; a clamp 15 for fixing the vessel onto the mounting section 10a by pressing the head of the vessel 1 continuously conveyed onto the inspection table from an upstream conveyance passage with a top plate 15a formed of the translucent member serving as the optical filter for preventing irregular reflection so as to allow the whole region inspection from various direction including the upward and side directions of the vessel; a lighting means 11 for lighting the vessel conveyed by turn of the inspection table from the upside of the top plate 15a; and an imaging means 12 for imaging the vessel lighted by the lighting means from the downside of the mounting section 10a.  <P>COPYRIGHT: (C)2007,JPO&INPIT
Patent JP-2008157657-A (JP)
Title: Tcp testing device, and preparatory work method for tcp testing device
Inventor: ONISHI TAKESHI
IPC: G01R31/26
Filed: 2006-12-21
Abstract: <P>PROBLEM TO BE SOLVED: To provide a TCP testing device capable of shortening a preparatory work time, and capable of preventing a defective TCP from flowing out.  <P>SOLUTION: This TCP testing device includes the first camera 27a for detecting a lot start position in a carrier tape 30 and an image processor 29a, sprockets 264, 265 for conveying a leader tape 40 connected to a tip part of the carrier tape 30 and the carrier tape 30, servo motors 266, 267, and a controller 29b for drive-controlling the servo motors 266, 267, and the controller 29b controls the servo motors 266, 267 to convey the leader tape 40 and the carrier tape 30 along a conveying direction or a direction opposite thereto by the sprockets 264, 265, based on a detection result by the image processor 29a.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2008154481-A (JP)
Title: Reel body of spinning reel
Inventor: KITAJIMA KEIGO
IPC: A01K89/01
Filed: 2006-12-21
Abstract: <P>PROBLEM TO BE SOLVED: To provide the reel body of a spinning reel, which suppresses exposure of a screw member to a rear part, and easily fixes a cover member to the reel body.  <P>SOLUTION: The reel body 2 of a spinning reel, that is mounted on a fishing rod and plays out a fishing line forward is equipped with a reel body 2a, a lid member 2b, a body guard 26 and an intermediate member 27. The reel body has a storage space RA, having an opening side part in the inside. The lid member is a member mounted detachably on the reel body so as to close the storage space. The body guard is a member t is mounted on the reel body from the rear for covering the reel body and the lid member and has a boss part 26a, projecting from the rear part of the reel body toward the storage space. The intermediate member is a member that is arranged in the storage space, has a front edge part fixed to the reel body by a first screw member 28 and a back end part fixed to the boss part, in the inside of the storage space by a second screw member 29.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2008159473-A (JP)
Title: Embedded illumination fixture
Inventor: SAKURAI MIKIO
IPC: F21Y103/37
Filed: 2006-12-25
Abstract: <P>PROBLEM TO BE SOLVED: To provide an embedded illumination fixture which does not make heat which is generated in a light source convected to a building material.  <P>SOLUTION: The embedded illumination fixture A is equipped with a nearly box shape body in which a lower face is opened, a reflecting plate 3 to reflect light irradiated from a single-based lamp which is formed in a nearly box shape and in which the lower face is opened, a frame body 4 which is formed in a nearly box shape and in which an upper and the lower face is opened and which has not a flange protruded toward the outside of the lower face side, and a translucent panel 5 arranged at the lower face side of the frame body 4. This embedded illumination fixture A is arranged on an attic through an embedded hole 18 formed at the base material 16 and a finishing ceiling 17, and the frame body 4 is arranged in a state that a D-sized space is formed between the base material 16 and the finishing ceiling 17 and the body is not contacted with the finishing face 17a of the finishing ceiling 17.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2007193793-A (JP)
Title: System, method and program for communication with database client user
Inventor: RAGHURAMAN KALYANARAMAN
IPC: G06F12/00
Filed: 2006-12-26
Abstract: <P>PROBLEM TO BE SOLVED: To provide a system for performing telecommunication with a database client user.  <P>SOLUTION: A messaging system having a server and one or more clients is included. The server includes a messaging module, which includes a database manager interface module for receiving a message request. The message request includes a message content and information showing one or more clients to which a message is transmitted. The messaging module includes: an address module for determining an IP address related with one or more respective clients; a messaging transmitter for transmitting the message to each IP address; and the message content. The client includes a client listener for receiving the message from the server and displays it on a monitor of a client user of a database.  <P>COPYRIGHT: (C)2007,JPO&INPIT
Patent JP-2007182374-A (JP)
Title: Method for manufacturing single-walled carbon nanotube
Inventor: MIN YO-SEP
IPC: B01J23/74
Filed: 2006-12-26
Abstract: <P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a single-walled carbon nanotube comprising growing a high-quality single-walled carbon nanotube on a glass substrate within a relatively low temperature range.  <P>SOLUTION: The method for manufacturing a single-walled carbon nanotube comprises the steps of: forming a buffer layer on a glass substrate; forming a catalyst metal layer on the buffer layer; introducing the glass substrate having the catalyst metal formed thereon into a vacuum chamber to generate an H<SB>2</SB>O plasma in the vacuum chamber; and supplying a source gas into the vacuum chamber to grow a carbon nanotube on the glass substrate.  <P>COPYRIGHT: (C)2007,JPO&INPIT
Patent JP-2008167521-A (JP)
Title: Motor, recording disc drive, and method of manufacturing rotor hub
Inventor: TAMAOKA TAKETO
IPC: H02K21/14
Filed: 2006-12-27
Abstract: <P>PROBLEM TO BE SOLVED: To form the hub thrust region of a rotor hub at low cost by cutting.  <P>SOLUTION: In the rotor hub 31 of a motor, a shaft 311, a disc 312, and a cylinder 313 are made integrally by cut processing, and the inner region 3124 of the undersurface 3121 of the disc 312 made continuously from the peripheral face 3111 of the shaft 311 is made a hub thrust region 3122 which faces the sleeve thrust region 226 of the sleeve main body 221. The step part 3123 of the undersurface 3121 of the disc 312 is arranged outside more than the thrust dynamic pressure groove of the sleeve region 226. This way, the step part 3123 is arranged in a region which does not constitute a thrust bearing part, whereby the hub thrust region 3122 can be made at low cost by cutting without performing the final finishing by end mill, etc. to a section in the vicinity of the border between the inner region 3124 and the step part 3123, by the cutting of the rotor hub 31.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2007200305-A (JP)
Title: Automatic identifier generation device, information storage system, and information acquisition method for it
Inventor: SAFA LAURENT
IPC: H04L12/28
Filed: 2006-12-27
Abstract: <P>PROBLEM TO BE SOLVED: To automatically generate an identification information associated with a role and the like of a device controller.  <P>SOLUTION: A plurality of devices x and y are connected to field busses FBx and FBy. An ID generation unit 10 in the device controller D communicating with the devices x and y performs software stack scan for identifying the type of the field buses FBx and FBy and performs communication based on the identified sub network type so as to identify the device feature. Then, topology information formed by the feature of field buses FBx and FBy and the feature of devices x and y are made a local identification information.  <P>COPYRIGHT: (C)2007,JPO&INPIT
Patent JP-2008166503-A (JP)
Title: Reactor
Inventor: NAKASAKA AKIRA
IPC: H01F27/255
Filed: 2006-12-28
Abstract: <P>PROBLEM TO BE SOLVED: To provide a reactor capable of saving space while ensuring inductance performance.  <P>SOLUTION: The reactor 1 has a coil 2 for generating magnetic flux at energization, and a core 3 disposed on the inside and outer circumference of the coil 2 and made of a magnetic power-mixed resin formed by mixing a magnetic powder. The coil 2 and the cores 3 each have an outer shape in which a projection shape to be formed in projecting the coil 2 and the cores 3 for a surface perpendicular to the axial direction of the coil 2 is non-circle.  <P>COPYRIGHT: (C)2008,JPO&INPIT
Patent JP-2006517661-A (JP)
Title: 容量型加速度センサー
IPC: G01P15/18
Filed: 2004-01-30
Abstract: 本発明は、加速度を測定するのに用いる測定装置、より詳細には、容量型加速度センサーに関する。本発明による容量型加速度センサーは、回転軸（７）に支持された、加速度センサーの可動電極（５）を有する。複数の電極対が、本発明による加速度センサーに使用されている。本発明による加速度センサー構造により、対称という利点が達成され、また信頼度の高い効率的な加速度の測定が、特に小さな容量型加速度センサー設計において、可能となる。
Patent JP-2006518419-A (JP)
Title: 加圧型及び非加圧型微粉炭燃焼を向上させるための非腐食性処理
IPC: C23F11/02
Filed: 2004-01-26
Abstract: 【課題】  燃焼炉系における金属表面の腐食を抑制する方法及び組成物の提供。 【解決手段】  本発明の一つの態様では、銅イオン触媒／燃焼助剤の存在下で微粉炭を燃料として燃焼させる。これらの系において、２−アミノエタノールのような第一アミノアルコール、トリエタノールアミンのような第三アミノアルコール及びホウ酸又はその水溶性塩形態のブレンドを使用することにより腐食を抑制する。
Patent JP-2006524937-A (JP)
Title: 電界効果トランジスタを含むアンテナスイッチ
IPC: H04B1/48
Filed: 2004-03-01
Abstract: 【課題】無線端末機器に用いられる小型の電界効果トランジスタを含むアンテナスイッチを提供する。 【解決手段】本発明はアンテナ入力／出力ノードと結合された送信増幅器を含む送受信機回路を提供する。送信増幅器は送受信機回路送信される通信を増幅するように構成される。送受信機回路はさらに受信機と電界効果トランジスタを含む。受信機はアンテナ入力／出力ノードと結合された受信機入力を含む。電界効果トランジスタは受信機入力と基準電圧との間に結合される。電界効果トランジスタは通信が受信機入力で受信されている時に開回路を提供し、通信が受信機入力で受信されていない時に閉回路を提供するように構成される。
Patent JP-2006523712-A (JP)
IPC: C07D471/02
Filed: 2004-04-16
Abstract: 2-Aryl substituted benzimidazoles and imidazo[4,5]pyridines are disclosed as inhibitors of Cds1 and useful as adjuvants to chemotherapy or radiation therapy in the treatment of cancer.
Patent JP-2007514582-A (JP)
IPC: B60T13/565
Filed: 2004-06-22
Abstract: A pneumatic brake booster with short actuating travel, comprising a skirt and a pneumatic piston that are rigidly connected and slideably mounted in a sealed casing to delimit a low-pressure chamber and a variable-pressure chamber and a three-way valve arrangement that is controlled by a control rod connected at a first end to a brake pedal. The three-way valve arrangement having first and second valve seats and a valve that is applied to at least one of the first and second valve seats by a valve spring. The second valve seat being borne by a first longitudinal end of a plunger distributor while the first valve seat is borne by a first longitudinal end of a bushing slideably mounted in a sealed manner in the pneumatic piston over a defined first travel and beyond the defined travel the bushing is secured axially to the pneumatic piston.
Patent JP-2007521317-A (JP)
Title: 脂質修飾された免疫応答調整剤
IPC: A61K/
Filed: 2004-08-12
Abstract: 脂質修飾された免疫応答調整剤化合物と、該化合物を含有する薬学的組成物と、動物のサイトカインの生合成を誘発または阻害するための、そしてウィルス性疾患および腫瘍性疾患を含む疾患の治療における、これらの化合物の免疫調節剤としての使用方法とが開示される。
Patent JP-2007504183-A (JP)
Title: オピオイド鎮痛剤およびアロエ組成物を含む経皮製剤
IPC: C07D489/02
Filed: 2004-07-26
Abstract: 本発明は、活性成分としてのフェナントレン群ないしはその薬学的に許容し得る塩からのオピオイド鎮痛剤および経皮透過剤としてのアロエ組成物を含む製剤に関する。
Patent JP-2007504195-A (JP)
Title: 腸溶性ポリマーでコーティングされたピリミジン−ａ−オン誘導体を含んでなる医薬製剤
IPC: A61K9/30
Filed: 2004-08-31
Abstract: 本発明は、ホスホリパーゼＡ２酵素リポ蛋白関連ホスホリパーゼＡ２（Ｌｐ−ＰＬＡ２）インヒビターを含んでなる経口投与用の腸溶性ポリマーでコーティングされた錠製剤、このような製剤を調製するための方法、および療法、具体的にはアテローム性動脈硬化症の治療におけるそれらの使用に関する。
Patent JP-2007504265-A (JP)
Title: Ｎ−（３−メトキシ−５−メチルピラジン−２−イル）−２−（４−［１，３，４−オキサジアゾール−２−イル］フェニル）ピリジン−３−スルホンアミドおよびｌｈｒｈ類似体および／またはビスホスホネートを含む組み合わせ
IPC: A61K31/675
Filed: 2004-09-02
Abstract: Ｎ−（３−メトキシ−５−メチルピラジン−２−イル）−２−（４−［１，３，４−オキサジアゾール−２−イル］フェニル）ピリジン−３−スルホンアミド、またはその医薬的に許容される塩、およびＬＨＲＨ類似体および／またはビスホスホネートを含む組み合わせが記載される。
Patent JP-2007510532-A (JP)
Title: 改善されたゾル−ゲル法、該方法により得られる生成物及び該生成物を使用して核物質を貯蔵する方法
IPC: C03B19/12
Filed: 2004-09-11
Abstract: 式Ｘ ｍ −Ｍ−（ＯＲ） ｎ−ｍ で示される化合物の溶液の製造、ゾルを得るための該化合物の加水分解、ゲル化、乾燥、緻密化及び焼結を含んでなるエーロゲルを製造するためのゾル−ゲル法。本方法は、放射性物質の水溶液により構成される放射性残留物を処理するために使用されることができる。
Patent JP-2007509640-A (JP)
IPC: A63F9/06
Filed: 2004-05-13
Abstract: This is an invention that concerns the construction of three-dimensional logic toys, which have the shape of a normal solid, substantially cubic in shape, and N number of layers in each direction of the three-dimensional rectangular Cartesian coordinate system, said layers consisting of smaller separate pieces. Their sides that form part of the solid's external surface are substantially cubic. The said pieces can rotate in layers around the three-dimensional axes of the coordinates; their visible rectangular surfaces can be colored or they can bare shapes, letters or numbers. The construction is based on the configuration of the internal surfaces of the separate pieces using planar, spherical and mainly right conical surfaces, coaxial to the semi-axis of the coordinates, the number of which is kappa per semi-axis. The advantage of this construction is that by the use of these kappa conical surfaces per semi-axis, two solids arise each time; the first has an even (N=2kappa) number of layers per direction visible to the user, whereas the second has the next odd (N=2kappa+1) number of visible layers per direction. As a result, by using a unified method and way of construction, for the values of kappa from 1 to 5, we can produce in total eleven logic toys whose shape is a normal geometric solid, substantially cubic in shape. These solids are the Cubic Logic Toys No N, where N can take values from N=2 to N=11. The invention became possible after we have solved the problem of connecting the corner piece with the interior of the cube, so that it can be self-contained, can rotate unobstructed around the axes of the three-dimensional rectangular Cartesian coordinate system and, at the same time, can be protected from being dismantled. This invention is unified and its advantage is that, with a new different internal configuration, we can construct-apart from the already known cubes 2x2x2, 3x3x3, 4x4x4, 5x5x5 which have already been constructed in many different ways and by different people-the next cubes from N=6 up to N=11. Finally, the most important advantage is that it eliminates the operational disadvantages that the already existing cubes have, except for the Rubik cube, i.e. 3x3x3.
Patent JP-2007510193-A (JP)
Title: 対象の同一性を検証する方法および装置
IPC: G06V40/10
Filed: 2004-05-06
Abstract: 本発明は、ある対象の同一性を、該対象の物理的特性の測定に基づいて検証することに関するものである。登録段階において、素性が既知の対象が測定され、結果として得られる登録測定値がのちの参照のために保存される。そして検証段階において、検証のために提示された対象が測定され、その検証測定値が前記登録測定値と比較されて、二つの測定値が同一の対象に由来するものであるかどうかが判定される。本発明によれば、登録測定値および検証測定値は、それぞれ登録ノイズおよび検証ノイズによって影響されたある第一のランダム変数の二つの実現値としてモデル化される。この登録ノイズおよび検証ノイズはそれぞれ第二および第三のランダム変数の実現値であり、前記第一、第二、第三のランダム変数は既知の分布をもつものとする。
Patent JP-2007509362-A (JP)
IPC: H04N7/26
Filed: 2004-10-06
Abstract: A method for encoding a digital signal into a scalable bitstream comprising quantizing the digital signal, and encoding the quantized signal to form a core-layer bitstream, performing an error mapping based on the digital signal and the core-layer bitstream to remove information that has been encoded into the core-layer bitstream, resulting in an error signal, bit-plane coding the error signal based on perceptual information of the digital signal, resulting in an enhancement-layer bitstream, wherein the perceptual information of the digital signal is determined using a perceptual model, and multiplexing the core-layer bitstream and the enhancement-layer bitstream, thereby generating the scalable bitstream. A method for decoding a scalable bitstream into a digital signal comprising de-multiplexing the scalable bitstream into a core-layer bitstream and an enhancement-layer bitstream, decoding and de-quantizing the core-layer bitstream to generate a core-layer signal, bit-plane decoding the enhancement-layer bitstream based on perceptual information of the digital signal, and performing an error mapping based on the bit-plane decoded enhancement-layer bitstream and the de-quantized core-layer signal, resulting in an reconstructed transformed signal, wherein the reconstructed transformed signal is the digital signal.
Patent JP-2007503967-A (JP)
Title: 発散を低減させた電磁界構成
IPC: A61N2/02
Filed: 2004-05-20
Abstract: 光子ビームの線量増強が、第１の磁石の第１の中心磁界ベクトルが第２の磁石の第２の中心磁界ベクトルに平行であるよりむしろ逆平行であるように、少なくとも２つの磁石を互い違いに対置されたコイル構成に構成することで制御されている。ある形式では、第１の磁石の第１の中心磁界ベクトルが第２の磁石の第２の中心磁界ベクトルに対し±９０°〜±１８０°の範囲で回転されている。典型的に、第１の中心磁界ベクトルは第２の中心磁界ベクトルと同軸でない。結果としての磁界構成が、対象となっている身体の深部に到達可能な磁界の絶対値の大きい部分をより広く有し、絶対値の大きい領域内部に身体の広い部分を収容できる付加的な空間を供給する。
Patent JP-2007508826-A (JP)
IPC: A01C7/04
Filed: 2004-10-20
Abstract: A machine for bedding out seed or plant tapes includes a frame and a carrying pole to be connected to a front of a tractor frame. At least one bedding out unit is provided with a plough member mounted on the frame. The plough member is associated with a conveyor including at least one continuous belt. The bedding out unit is provided with a supporting plate for supporting at least one supply container for the seed or plant tape to be bedded out in a furrow produced by the plough member. The bedding out unit includes a plough member of a substantially U-shaped cross section. Top webs of the U are substantially horizontally projecting stabilizing webs. The plough member is of a length (L) of at least approximately 30 cm and a width (b) measured across the U of 15 to 50 mm. The conveyor of the plough member is formed by an inclined main conveyor with two continuous conveyor belts arranged adjacent, but with a distance (a) to one another. The main conveyor extends over most of the entire length (L) of the plough member. The supporting plate is adjustable with respect to at least one of height and angle, and at least two pressure wheels are mounted on a rear end of the machine for pressing down the earth around the seed or plant tape portion which has just been bedded out in the furrow. A pre-conveyor is provided between the supporting plate for the supply container and the main conveyor. The pre-conveyor is adapted to run at a speed slightly slower than a speed of the main conveyor. The pre-conveyor is mounted on a slide reciprocable in the longitudinal direction of the machine. A pair of co-acting separation rollers is mounted between the main conveyor and the pre-conveyor, a peripheral speed of the separation rollers corresponding substantially to an advancing speed of the main conveyor.